Cita APA (7th ed.)
Bent, R. K., & Kronenberg, H. H. Principles of secondary education.
Cita Chicago (17th ed.)
Bent, Rudyard K., i Henry H. Kronenberg. Principles of Secondary Education.
Cita MLA (9th ed.)
Bent, Rudyard K., i Henry H. Kronenberg. Principles of Secondary Education.
Atenció: Aquestes cites poden no estar 100% correctes.