Cita APA (7a ed.)

English, J., & English, B. (1992). Police training manual (7. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

English, Jack, y Brian English. Police Training Manual. 7. ed. London [u.a.]: McGraw-Hill, 1992.

Cita MLA (8a ed.)

English, Jack, y Brian English. Police Training Manual. 7. ed. McGraw-Hill, 1992.