Gaya APA

Lewis, W, H., Elvin-Lewis, M, P. (1977). Medical Botany:Plants Affecting Man's Health . New York: John Wiley & Sons.

Gaya MLA

Lewis, Walter, H., Elvin-Lewis, Memory, P.F. "Medical Botany:Plants Affecting Man's Health". New York: John Wiley & Sons, 1977. Text.