APA (7th ed.) Citation

Gale Group, Haugen, D. M., & Musser, S. (2011). The Vietnam War. Greenhaven Press.

Chicago Style (17th ed.) Citation

Gale Group, David M. Haugen, and Susan Musser. The Vietnam War. Detroit, Mich: Greenhaven Press, 2011.

MLA (8th ed.) Citation

Gale Group, et al. The Vietnam War. Greenhaven Press, 2011.