Cita APA (7a ed.)

Powis, D. (1977). The signs of crime: A field manual for police. McGraw-Hill.

Cita Chicago Style (17a ed.)

Powis, David. The Signs of Crime: A Field Manual for Police. London New York: McGraw-Hill, 1977.

Cita MLA (8a ed.)

Powis, David. The Signs of Crime: A Field Manual for Police. McGraw-Hill, 1977.