Lewis, Robert T. Human behavior; : an introduction to psychology [electronic resource] / [by] Robert T. Lewis [and] Hugh M. Petersen.. — New York, : Ronald Press Co., [1974]. — vii, 459 p. : illus. 24 cm. Bibliography: p. 427-431. LCCN: 71190207 Subjects--Topical Terms: Psychology. LC Class. No.: BF121 / .L45 Dewey Class. No.: 150