Agustín Ruiz Robledo, 'Up-to-date as of November 2011' (2012), pp. 1–1, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Table of Contents' (2012), pp. 5–14, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'The Author' (2012), pp. 3–4, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Acknowledgements' (2012), pp. 15–16, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'List of Abbreviations' (2012), pp. 15–20, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'General Introduction' (2012), pp. 21–42, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Selected Bibliography' (2012), pp. 43–48, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Part I. The Sources of Constitutional Law' (2012), pp. 49–78, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Part II. The Form of Government' (2012), pp. 79–148, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Part III. The State and its Divisions' (2012), pp. 149–198, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Part IV. Citizenship and Fundamental Rights' (2012), pp. 199–270, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)

Agustín Ruiz Robledo, 'Index' (2012), pp. 271–280, in Alen Prof. Dr. Andr (Volume Editor), Roger Blanpain (General Editor), Michele Colucci (Associate General Editor), Spain, International Encyclopaedia for Constitutional Law (Kluwer Law International, Alphen aan den Rijn)