APA (7th ed.) Citation

Boak, A. E. R., Slosson, P. W., & Anderson, H. R. (1944). World history: In 2 volumes. U.S. Armed Forces Inst.

Chicago Style (17th ed.) Citation

Boak, Arthur Edward Romilly, Preston W. Slosson, and Howard Richmond Anderson. World History: In 2 Volumes. Madison, Wis: U.S. Armed Forces Inst, 1944.

MLA (9th ed.) Citation

Boak, Arthur Edward Romilly, et al. World History: In 2 Volumes. U.S. Armed Forces Inst, 1944.