APA (7th ed.) Citation

Arnold-Friend, L. A., Sommers, R. J., & Winey, M. (1982). The era of the Civil War--1820-1876 (1982 edition.). US Army Military History Institute.

Chicago Style (17th ed.) Citation

Arnold-Friend, Louise A., Richard J. Sommers, and Michael Winey. The Era of the Civil War--1820-1876. 1982 edition. Carlisle Barracks, Pa.: US Army Military History Institute, 1982.

MLA (9th ed.) Citation

Arnold-Friend, Louise A., et al. The Era of the Civil War--1820-1876. 1982 edition. US Army Military History Institute, 1982.