Scheffler, I. (1973). Reason and teaching. Bobbs-Merrill.
Cita Chicago (17th ed.)Scheffler, Israel. Reason and Teaching. Indianapolis: Bobbs-Merrill, 1973.
Cita MLA (9th ed.)Scheffler, Israel. Reason and Teaching. Bobbs-Merrill, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.