Levin, T. (1981). Effective instruction. Asco.
Cita Chicago (17th ed.)Levin, Tamar. Effective Instruction. Asco, 1981.
Cita MLA (9th ed.)Levin, Tamar. Effective Instruction. Asco, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)