Borger, R. (1969). The psychology of learning. Penguin Books.
Cita Chicago (17th ed.)Borger, Robert. The Psychology of Learning. Londres: Penguin Books, 1969.
Cita MLA (9th ed.)Borger, Robert. The Psychology of Learning. Penguin Books, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.