APA (7th ed.) Citation

Schultz, D. O. (1978). Principles of physical security. Gulf Pub. Co., Book Division.

Chicago Style (17th ed.) Citation

Schultz, Donald O. Principles of Physical Security. Houston, Tex.: Gulf Pub. Co., Book Division, 1978.

MLA (9th ed.) Citation

Schultz, Donald O. Principles of Physical Security. Gulf Pub. Co., Book Division, 1978.