APA (7th ed.) Citation

Rolfs, P. H. (1906). Citrus fruit growing in the Gulf states. U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

Rolfs, P. H. Citrus Fruit Growing in the Gulf States. Washington, D.C: U.S. Dept. of Agriculture, 1906.

MLA (9th ed.) Citation

Rolfs, P. H. Citrus Fruit Growing in the Gulf States. U.S. Dept. of Agriculture, 1906.