APA

Nuttin J., Greenwald A. G., . (1968). Reward and punishment in human learning: elements of a behavior theory. New York: Academic Press.

Chicago

Nuttin Joseph, Greenwald Anthony G, . 1968. Reward and punishment in human learning: elements of a behavior theory. New York: Academic Press.

Harvard

Nuttin J., Greenwald A. G., . (1968). Reward and punishment in human learning: elements of a behavior theory. New York: Academic Press.

MLA

Nuttin Joseph, Greenwald Anthony G, . Reward and punishment in human learning: elements of a behavior theory. New York: Academic Press. 1968.