Gaya APA

Guenther, E. (1972). The Essential Oils. Volume 4 : Individual Essential Oils of The Plant Families Gramineae, Lauraceae, Burseraceae, and Geraniaceae . New York: Robber E. Krieger.

Gaya MLA

Guenther, Ernest. "The Essential Oils. Volume 4 : Individual Essential Oils of The Plant Families Gramineae, Lauraceae, Burseraceae, and Geraniaceae". New York: Robber E. Krieger, 1972. Text.