APA (7th ed.) Citation

Rider, J. F. (1941). Vacuum tube voltmeters. J.F. Rider.

Chicago Style (17th ed.) Citation

Rider, John F. Vacuum Tube Voltmeters. New York: J.F. Rider, 1941.

MLA (9th ed.) Citation

Rider, John F. Vacuum Tube Voltmeters. J.F. Rider, 1941.

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