Gaya APA

Hergenhahn, B., Olson, M, H. (1993). An Introduction to theories of learning (4th ed). Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Hergenhahn, B.R.., Olson, Matthew, H.. "An Introduction to theories of learning". 4th ed Englewood Cliffs, NJ: Prentice Hall, 1993. Text.