APA Citation

Allen, T. B., & Abell, S. (1992). The Blue and the Gray. [Washington, D.C.]: National Geographic Society.

Chicago Style Citation

Allen, Thomas B., and Sam Abell. The Blue and the Gray. [Washington, D.C.]: National Geographic Society, 1992.

MLA Citation

Allen, Thomas B., and Sam Abell. The Blue and the Gray. [Washington, D.C.]: National Geographic Society, 1992.

Warning: These citations may not always be 100% accurate.