Green, T. F. (1968). Work, leisure, and the American schools. Random House.
Cita Chicago (17th ed.)Green, Thomas F. Work, Leisure, and the American Schools. New York: Random House, 1968.
Cita MLA (9th ed.)Green, Thomas F. Work, Leisure, and the American Schools. Random House, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.