APA Edition Citation

Youngken, H. W. (2003). Natural drugs: Morphologic and taxonomic consideration (2nd ed.). Biotech books.

Chicago Edition Citation

Youngken, Heber Wilkinson. Natural Drugs: Morphologic and Taxonomic Consideration. 2nd ed. Delhi: Biotech books, 2003.

MLA Edition Citation

Youngken, Heber Wilkinson. Natural Drugs: Morphologic and Taxonomic Consideration. 2nd ed. Biotech books, 2003.

Warning: These citations may not always be 100% accurate.