APA (7th ed.) Zitazioa

Beer, S. H., Ulam, A. B., Spiro, H. J., Eckstein, H., & Wahl, N. (1962). Patterns of government: The major political systems of Europe (2a. ed.). Random House.

Chicago Style (17th ed.) Zitazioa

Beer, Samuel H., Adam B. Ulam, Herbert J. Spiro, Harry Eckstein, eta Nicholas Wahl. Patterns of Government: The Major Political Systems of Europe. 2a. ed. Nueva York: Random House, 1962.

MLA (9th ed.) Zitazioa

Beer, Samuel H., et al. Patterns of Government: The Major Political Systems of Europe. 2a. ed. Random House, 1962.