Cita APA (7th ed.)

Peters, D. A. (1967). Principles of supervision. Longmans.

Cita Chicago (17th ed.)

Peters, D. A. Principles of Supervision. [London]: Longmans, 1967.

Cita MLA (8th ed.)

Peters, D. A. Principles of Supervision. Longmans, 1967.