APA (7th ed.) Citation

Youngken, H. W. (1951). Pharmaceutical botany (7. ed.). Blakiston.

Chicago Style (17th ed.) Citation

Youngken, Heber Wilkinson. Pharmaceutical Botany. 7. ed. Philadelphia: Blakiston, 1951.

MLA (9th ed.) Citation

Youngken, Heber Wilkinson. Pharmaceutical Botany. 7. ed. Blakiston, 1951.

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