APA (7th ed.) Citation

Gayford, M. L. (1969). Modern relay techniques / by M.L. Gayford. Newnes-Butterworths.

Chicago Style (17th ed.) Citation

Gayford, M. L. Modern Relay Techniques / by M.L. Gayford. Newnes-Butterworths, 1969.

MLA (9th ed.) Citation

Gayford, M. L. Modern Relay Techniques / by M.L. Gayford. Newnes-Butterworths, 1969.

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