APA (7th ed.) Citation

Weltman, J. J., Nacht, M., & Quester, G. H. (1991). Challenges to American National Security in the 1990s. Springer US.

Chicago Style (17th ed.) Citation

Weltman, John J., Michael Nacht, and George H. Quester. Challenges to American National Security in the 1990s. Boston, MA: Springer US, 1991.

MLA (9th ed.) Citation

Weltman, John J., et al. Challenges to American National Security in the 1990s. Springer US, 1991.