Cita APA (7a ed.)

Barefoot, J. K. (1983). Undercover investigation (2nd ed.). Butterworths.

Cita Chicago Style (17a ed.)

Barefoot, J. Kirk. Undercover Investigation. 2nd ed. Boston [u.a.]: Butterworths, 1983.

Cita MLA (8a ed.)

Barefoot, J. Kirk. Undercover Investigation. 2nd ed. Butterworths, 1983.