Pintrich, Paul R. Motivation in education : theory, research and applications / Paul R. Pintrich, Dale H. Schunk. - Englewood Cliffs, N. J. : Prentice Hall, 1996. - 434 p. ; 23 cm. p. 395-422. ISBN: 0023956216 RM112.14 Subjects--Topical Terms: Motivation in education.Motivation (Psychology).