APA (7th ed.) Citation

Hughes, T. P. (1971). Elmer Sperry : inventor and engineer / by T.P. Hughes: Inventor and engineer. Johns Hopkins.

Chicago Style (17th ed.) Citation

Hughes, T. P. Elmer Sperry : Inventor and Engineer / by T.P. Hughes: Inventor and Engineer. Johns Hopkins, 1971.

MLA (9th ed.) Citation

Hughes, T. P. Elmer Sperry : Inventor and Engineer / by T.P. Hughes: Inventor and Engineer. Johns Hopkins, 1971.

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