APA (7th ed.) Citation

Porter, A. (1953). Introduction to servomechanisms (2d ed.). Methuen; Wiley.

Chicago Style (17th ed.) Citation

Porter, Arthur. Introduction to Servomechanisms. 2d ed. London : New York: Methuen; Wiley, 1953.

MLA (9th ed.) Citation

Porter, Arthur. Introduction to Servomechanisms. 2d ed. Methuen; Wiley, 1953.