Perry, W. G. (1970). Forms of intellectual and ethical development in the college years: Scheme. Holt Rinehart and Winston.
Cita Chicago (17th ed.)Perry, William G. Forms of Intellectual and Ethical Development in the College Years: Scheme. New York: Holt Rinehart and Winston, 1970.
Cita MLA (9th ed.)Perry, William G. Forms of Intellectual and Ethical Development in the College Years: Scheme. Holt Rinehart and Winston, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.