APA (7e ed.) Bronvermelding

Widdison, H. A. (1998). Social problems 98/99. Dushkin/McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Widdison, Harold A. Social Problems 98/99. Guilford, CT.: Dushkin/McGraw-Hill, 1998.

MLA (8e ed.) Bronvermelding

Widdison, Harold A. Social Problems 98/99. Dushkin/McGraw-Hill, 1998.