Bolton, B. (1974). Ways to help them learn. International Center for Learning.
Cita Chicago (17th ed.)Bolton, Barbara. Ways to Help Them Learn. International Center for Learning, 1974.
Cita MLA (9th ed.)Bolton, Barbara. Ways to Help Them Learn. International Center for Learning, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.