Cita APA (7a ed.)

Hubbard Judd, C. (1927). Psychology of secondary education. Ginn and Company.

Cita Chicago Style (17a ed.)

Hubbard Judd, Charles. Psychology of Secondary Education. Boston [etc.]: Ginn and Company, 1927.

Cita MLA (9a ed.)

Hubbard Judd, Charles. Psychology of Secondary Education. Ginn and Company, 1927.