APA (7th ed.) Citation

Langworthy, C. F. (1907). Use of fruit as food. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Langworthy, C. F. Use of Fruit as Food. [Washington, D.C.]: U.S. Government Printing Office, 1907.

MLA (9th ed.) Citation

Langworthy, C. F. Use of Fruit as Food. U.S. Government Printing Office, 1907.