APA (7th ed.) Citation

Batcher R .R. Ralph R. (1921). Prepared Radio Measurements With Sele-Computing Charts. New York, Wireless Press, 1921.

Chicago Style (17th ed.) Citation

Batcher R .R. Ralph R. Prepared Radio Measurements With Sele-Computing Charts. New York, Wireless Press, 1921, 1921.

MLA (9th ed.) Citation

Batcher R .R. Ralph R. Prepared Radio Measurements With Sele-Computing Charts. New York, Wireless Press, 1921, 1921.

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