Hand, H. C. (1958). Principles of public secondary education. Harcourt, Brace & World.
Cita Chicago (17th ed.)Hand, Harold Curtis. Principles of Public Secondary Education. New York: Harcourt, Brace & World, 1958.
Cita MLA (9th ed.)Hand, Harold Curtis. Principles of Public Secondary Education. Harcourt, Brace & World, 1958.
Atenció: Aquestes cites poden no estar 100% correctes.