(2002) "The Psychology of Learning and the Art of Teaching"* Bjork, D. W. (1993) "B. F. Skinner: a life"* Dews, P. B.
(2002) "The Psychology of Learning and the Art of Teaching"* Bjork, D. W. (1993) "B. F. Skinner: A Life"* Dews, P. B.