APA (7th ed.) Citation

United States Tariff Commission. (1920). Crude botanical drug industry. GPO.

Chicago Style (17th ed.) Citation

United States Tariff Commission. Crude Botanical Drug Industry. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

United States Tariff Commission. Crude Botanical Drug Industry. GPO, 1920.

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