APA (7th ed.) Citation

Duke, J. A., & Duke, J. A. (2002). Handbook of medicinal herbs (2nd ed.). CRC Press.

Chicago Style (17th ed.) Citation

Duke, James A., and James A. Duke. Handbook of Medicinal Herbs. 2nd ed. Boca Raton, Fla: CRC Press, 2002.

MLA (9th ed.) Citation

Duke, James A., and James A. Duke. Handbook of Medicinal Herbs. 2nd ed. CRC Press, 2002.