APA Style
Youngken, Heber W.. (1950).
A Textbook of pharmacognosy 6th Ed .
New York:
McGraw-Hill.
Chicago Style
Youngken, Heber W..
A Textbook of pharmacognosy 6th Ed.
New York:
McGraw-Hill,
1950.
Hard Copy.
MLA Style
Youngken, Heber W..
A Textbook of pharmacognosy 6th Ed.
New York:
McGraw-Hill,
1950.
Hard Copy.
Turabian Style
Youngken, Heber W..
A Textbook of pharmacognosy 6th Ed.
New York:
McGraw-Hill,
1950.
Hard Copy.