APA Style
Guenther, Ernest, Althausen, Darrel. (1949).
The essential oils : The constituens of essential oils Volume II .
New York:
Van nostrad.
Chicago Style
Guenther, Ernest, Althausen, Darrel.
The essential oils : The constituens of essential oils Volume II.
New York:
Van nostrad,
1949.
Text.
MLA Style
Guenther, Ernest, Althausen, Darrel.
The essential oils : The constituens of essential oils Volume II.
New York:
Van nostrad,
1949.
Text.
Turabian Style
Guenther, Ernest, Althausen, Darrel.
The essential oils : The constituens of essential oils Volume II.
New York:
Van nostrad,
1949.
Print.