APA (7th ed.) Citation

Foster, S. (1998). 101 Medicinal herbs: An illustrated guide. Interwave Press.

Chicago Style (17th ed.) Citation

Foster, Steven. 101 Medicinal Herbs: An Illustrated Guide. Loveland, Colo.: Interwave Press, 1998.

MLA (9th ed.) Citation

Foster, Steven. 101 Medicinal Herbs: An Illustrated Guide. Interwave Press, 1998.