Lindgren, H. C. (1976). Educational psychology in the classroom (5a. ed.). John Wiley.
Cita Chicago (17th ed.)Lindgren, Henry Clay. Educational Psychology in the Classroom. 5a. ed. Nueva York: John Wiley, 1976.
Cita MLA (9th ed.)Lindgren, Henry Clay. Educational Psychology in the Classroom. 5a. ed. John Wiley, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.