Cita APA (7a ed.)

Mackall, L. E. (1951). The principles of surety underwriting. The Spectator.

Cita Chicago Style (17a ed.)

Mackall, Luther Eugene. The Principles of Surety Underwriting. Philadelphia: The Spectator, 1951.

Cita MLA (9a ed.)

Mackall, Luther Eugene. The Principles of Surety Underwriting. The Spectator, 1951.