एपीए उद्धरण

Walker, S. (1975). Learning and Reinforcemant. Methuen.

शिकागो स्टाइल उद्धरण

Walker, Stephen. Learning and Reinforcemant. London: Methuen, 1975.

एमएलए उद्धरण

Walker, Stephen. Learning and Reinforcemant. Methuen, 1975.