APA (7th ed.) Citation

Christensen, C., & Christensen, T. (1998). The U.S.-Mexican War. Bay Books.

Chicago Style (17th ed.) Citation

Christensen, Carol, and Thomas Christensen. The U.S.-Mexican War. San Francisco, CA: Bay Books, 1998.

MLA (9th ed.) Citation

Christensen, Carol, and Thomas Christensen. The U.S.-Mexican War. Bay Books, 1998.