Cita APA (7a ed.)

Wachtel, J. (1983). Police undercover work: Issues and practice. Univ. Microfilms Internat.

Cita Chicago Style (17a ed.)

Wachtel, Julius. Police Undercover Work: Issues and Practice. Ann Arbor, Mich: Univ. Microfilms Internat, 1983.

Cita MLA (9a ed.)

Wachtel, Julius. Police Undercover Work: Issues and Practice. Univ. Microfilms Internat, 1983.