APA (7th ed.) Citation

Say, M. G. (1978). Alternating current machines (4.ed., repr.). Pitman.

Chicago Style (17th ed.) Citation

Say, Maurice G. Alternating Current Machines. 4.ed., repr. London: Pitman, 1978.

MLA (9th ed.) Citation

Say, Maurice G. Alternating Current Machines. 4.ed., repr. Pitman, 1978.