APA (7th ed.) Citation

Shultz, Greenwood, & Godson. (1993). Security studies for the 1990s. Brassey's (US).

Chicago Style (17th ed.) Citation

Shultz, Greenwood, and Godson. Security Studies for the 1990s. Washington: Brassey's (US), 1993.

MLA (8th ed.) Citation

Shultz, et al. Security Studies for the 1990s. Brassey's (US), 1993.