Cita APA (7a ed.)

Haines, G. K., & Langbart, D. A. (1993). Unlocking the files of the FBI: A guide to its records and classification system (1. publ.). Scholarly Resources Inc.

Cita Chicago Style (17a ed.)

Haines, Gerald K., y David A. Langbart. Unlocking the Files of the FBI: A Guide to Its Records and Classification System. 1. publ. Wilmington, Del: Scholarly Resources Inc, 1993.

Cita MLA (8a ed.)

Haines, Gerald K., y David A. Langbart. Unlocking the Files of the FBI: A Guide to Its Records and Classification System. 1. publ. Scholarly Resources Inc, 1993.