Cita APA (7a ed.)

Long, H. (1989). 21 techniques of silent killing. Paladin Pr.

Cita Chicago Style (17a ed.)

Long, Hei. 21 Techniques of Silent Killing. Boulder, Colo: Paladin Pr, 1989.

Cita MLA (8a ed.)

Long, Hei. 21 Techniques of Silent Killing. Paladin Pr, 1989.