APA (7th ed.) Citation

Elpel, T. J. (2013). Botany in a day: The patterns method of plant identification an herbal field guide to plant families of North America (Sixth edition.). HOPS Press.

Chicago Style (17th ed.) Citation

Elpel, Thomas J. Botany in a Day: The Patterns Method of Plant Identification an Herbal Field Guide to Plant Families of North America. Sixth edition. Pony, MT: HOPS Press, 2013.

MLA (9th ed.) Citation

Elpel, Thomas J. Botany in a Day: The Patterns Method of Plant Identification an Herbal Field Guide to Plant Families of North America. Sixth edition. HOPS Press, 2013.