Cita APA (7a ed.)

Hersey, J. (1971). Letter to the alumni. Bantam Books.

Cita Chicago Style (17a ed.)

Hersey, John. Letter to the Alumni. New York [etc.]: Bantam Books, 1971.

Cita MLA (9a ed.)

Hersey, John. Letter to the Alumni. Bantam Books, 1971.