Cita APA (7th ed.)

Kahn, R. I. (1972). The letter and the spirit. Word Books.

Cita Chicago (17th ed.)

Kahn, Robert I. The Letter and the Spirit. Waco, Texas: Word Books, 1972.

Cita MLA (9th ed.)

Kahn, Robert I. The Letter and the Spirit. Word Books, 1972.