References

Domjan, M. & Burkhard, B. (1986). The principles of learning and behavior (2nd edition). Pacific Grove, CA: Brooks/Cole Publishing.

Gray, Peter. (1994). Psychology (2nd Edition). New York: Worth Publishers, Inc.

Myers, David G. (1995). Psychology (4th Edition). New York: Worth Publishers, Inc.

Myers, David G. (1996). Exploring Psychology (3rd Edition). New York: Worth Publishers, Inc.

Skinner, B. F. (1978). Reflections on behaviorism and society. Englewood Cliffs, NJ: Prentice-Hall.

Skinner, B. F. (1948). Walden two. New York: Macmillan.