APA (7th ed.) Citation

Cooke, J. I. E., Kramer, A., & Rowland-Entwistle, T. (1981). History's timeline. Crescent Books.

Chicago Style (17th ed.) Citation

Cooke, Jean Isobel Esther, Ann Kramer, and Theodore Rowland-Entwistle. History's Timeline. New York: Crescent Books, 1981.

MLA (9th ed.) Citation

Cooke, Jean Isobel Esther, et al. History's Timeline. Crescent Books, 1981.