APA Style

Ernest Guenther, Ph.D.. (1949). THE ESSENTIAL OILS Vol. II (II). Canada: D. van Nostrand Company, Inc..

Chicago Style

Ernest Guenther, Ph.D.. THE ESSENTIAL OILS Vol. II. II Canada: D. van Nostrand Company, Inc., 1949. Text.

MLA Style

Ernest Guenther, Ph.D.. THE ESSENTIAL OILS Vol. II. II Canada: D. van Nostrand Company, Inc., 1949. Text.

Turabian Style

Ernest Guenther, Ph.D.. THE ESSENTIAL OILS Vol. II. II Canada: D. van Nostrand Company, Inc., 1949. Print.