APA (7th ed.) Citation

Safford, W. E. (1914). Classification of genus Annona, with descriptions of new and imperfectly known species. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Safford, William Edwin. Classification of Genus Annona, with Descriptions of New and Imperfectly Known Species. [Place of publication not identified]: U.S. Government Printing Office, 1914.

MLA (9th ed.) Citation

Safford, William Edwin. Classification of Genus Annona, with Descriptions of New and Imperfectly Known Species. U.S. Government Printing Office, 1914.