APA (7th ed.) Citation

Imhoff, S. (1998). Timelines of world history. CLB.

Chicago Style (17th ed.) Citation

Imhoff, Susan. Timelines of World History. Godalming, Surrey, Eng: CLB, 1998.

MLA (9th ed.) Citation

Imhoff, Susan. Timelines of World History. CLB, 1998.