Gaya APA

Cecco, J, P, D., Crawford, W, R. (1974). The Psychology of Learning and Instruction (Ed. 2.). New Jersey: Prentice - Hall.

Gaya MLA

Cecco, John, P., De., Crawford, William, R.. "The Psychology of Learning and Instruction". Ed. 2. New Jersey: Prentice - Hall, 1974. Text.