APA (7th ed.) Citation

Say, M. G. (1971). Introduction to the unified theory of electromagnetic machines. Pitman.

Chicago Style (17th ed.) Citation

Say, M. G. Introduction to the Unified Theory of Electromagnetic Machines. London: Pitman, 1971.

MLA (9th ed.) Citation

Say, M. G. Introduction to the Unified Theory of Electromagnetic Machines. Pitman, 1971.

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