APA (7e ed.) Bronvermelding

Beer, S. H., & Ulam, A. B. (1962). Patterns of government: The major political systems of Europe (2d ed., rev. and enl.). Random House.

Chicago (17e ed.) Bronvermelding

Beer, Samuel Hutchison, en Adams Burno Ulam. Patterns of Government: The Major Political Systems of Europe. 2d ed., rev. and enl. New York: Random House, 1962.

MLA (9e ed.) Bronvermelding

Beer, Samuel Hutchison, en Adams Burno Ulam. Patterns of Government: The Major Political Systems of Europe. 2d ed., rev. and enl. Random House, 1962.