Uhl, W. L. (1925). Principles of secondary education: A textbook for students of education ; based upon writings of representative educators. Silver, Burdett.
Chicago-Zitierstil (17. Ausg.)Uhl, Willis L. Principles of Secondary Education: A Textbook for Students of Education ; Based upon Writings of Representative Educators. New York [u.a.]: Silver, Burdett, 1925.
MLA-Zitierstil (9. Ausg.)Uhl, Willis L. Principles of Secondary Education: A Textbook for Students of Education ; Based upon Writings of Representative Educators. Silver, Burdett, 1925.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.