APA (7th ed.) Citation

Krochmal, A., Walters, R. S., & Doughty, R. M. A guide to medicinal plants of Appalachia.

Chicago Style (17th ed.) Citation

Krochmal, Arnold, Russell S. Walters, and Richard M. Doughty. A Guide to Medicinal Plants of Appalachia.

MLA (9th ed.) Citation

Krochmal, Arnold, et al. A Guide to Medicinal Plants of Appalachia.