APA (7th ed.) Citation

Horle, L. C. F., & Preston, J. L. (1924). Some methods of testing radio receiving sets. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Horle, L. C. F., and J. Lonnie Preston. Some Methods of Testing Radio Receiving Sets. [Washington?]: U.S. Government Printing Office, 1924.

MLA (9th ed.) Citation

Horle, L. C. F., and J. Lonnie Preston. Some Methods of Testing Radio Receiving Sets. U.S. Government Printing Office, 1924.