APA (7th ed.) Citation

Calkins, C. (1997). The Appomattox campaign: March 29-April 9, 1865. Combined Books.

Chicago Style (17th ed.) Citation

Calkins, Chris. The Appomattox Campaign: March 29-April 9, 1865. Conshohocken, PA: Combined Books, 1997.

MLA (9th ed.) Citation

Calkins, Chris. The Appomattox Campaign: March 29-April 9, 1865. Combined Books, 1997.