APA (7e ed.) Bronvermelding

National Municipal League. (1952). A guide for charter commissions (2nd rev. ed.). National Municipal League.

Chicago (17e ed.) Bronvermelding

National Municipal League. A Guide for Charter Commissions. 2nd rev. ed. New York: National Municipal League, 1952.

MLA (9e ed.) Bronvermelding

National Municipal League. A Guide for Charter Commissions. 2nd rev. ed. National Municipal League, 1952.