Cita APA (7a ed.)

Napoli, P. J. (1937). Homework in the New York city Elementary Schools. Columbia University.

Cita Chicago Style (17a ed.)

Napoli, Peter J. Homework in the New York City Elementary Schools. New York: Columbia University, 1937.

Cita MLA (9a ed.)

Napoli, Peter J. Homework in the New York City Elementary Schools. Columbia University, 1937.