Cita APA (7th ed.)
Stoop, D. A. (1971). Ways to help them learn: Youth.grades 7 to 12. Int.Center for learning.
Cita Chicago (17th ed.)
Stoop, David A. Ways to Help Them Learn: Youth.grades 7 to 12. California: Int.Center for learning, 1971.
Cita MLA (9th ed.)
Stoop, David A. Ways to Help Them Learn: Youth.grades 7 to 12. Int.Center for learning, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.