एपीए उद्धरण

Porter, A. (1950). Introduction to servomechanisms. Methuen.

शिकागो स्टाइल उद्धरण

Porter, Arthur. Introduction to Servomechanisms. London: Methuen, 1950.

एमएलए उद्धरण

Porter, Arthur. Introduction to Servomechanisms. Methuen, 1950.