Youngken, H. W. (1951). Pharmaceutical botany (Seventh edition.). Blakiston.
Chicago Style (17th ed.) CitationYoungken, Heber Wilkinson. Pharmaceutical Botany. Seventh edition. Philadelphia: Blakiston, 1951.
MLA (9th ed.) CitationYoungken, Heber Wilkinson. Pharmaceutical Botany. Seventh edition. Blakiston, 1951.
Warning: These citations may not always be 100% accurate.