Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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