APA (7th ed.) Citation

Pratt, R., & Youngken, H. W. 1. (1951). Pharmacognosy ; the study of natural drug substances and certain allied products. Lippincott.

Chicago Style (17th ed.) Citation

Pratt, Robertson, and Heber Wilkinson 1913 Youngken. Pharmacognosy ; the Study of Natural Drug Substances and Certain Allied Products. Philadelphia: Lippincott, 1951.

MLA (9th ed.) Citation

Pratt, Robertson, and Heber Wilkinson 1913 Youngken. Pharmacognosy ; the Study of Natural Drug Substances and Certain Allied Products. Lippincott, 1951.

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