Cita APA (7a ed.)

Hess, K. M., & Wrobleski, H. M. (1982). Introduction to private security. West Pub. Co.

Cita Chicago Style (17a ed.)

Hess, Kären M., y Henry M. Wrobleski. Introduction to Private Security. St. Paul: West Pub. Co, 1982.

Cita MLA (8a ed.)

Hess, Kären M., y Henry M. Wrobleski. Introduction to Private Security. West Pub. Co, 1982.