APA (7th ed.) Citation

Boak, A. E. R., Slosson, P. W., & Anderson, H. World history. Publ. for the United States Armed Forces Inst.

Chicago Style (17th ed.) Citation

Boak, Arthur Edward Romilly, Preston W. Slosson, and Howard Anderson. World History. Madison, Wis: Publ. for the United States Armed Forces Inst.

MLA (9th ed.) Citation

Boak, Arthur Edward Romilly, et al. World History. Publ. for the United States Armed Forces Inst.