APA (7th ed.) Citation

United States. Department of Agriculture. (1921). Citrus fruits. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Citrus Fruits. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

United States. Department of Agriculture. Citrus Fruits. GPO, 1921.

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