Garry, Ralph. The nature and conditions of learning / by Ralph Garry and Howard L. Kingsley. - 3rd ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1970. - x, 593 p. : ill. ; 24 cm. Previous editions by Howard L. Kingsley. Bibliography : p. 533-580. ISBN: 1136106838 Subjects--Topical Terms: Learning, Psychology of.