Cita APA (7a ed.)

Bolton, R. A. (1966). Systems contracting: A new purchasing technique. American Management Association.

Cita Chicago Style (17a ed.)

Bolton, Ralph A. Systems Contracting: A New Purchasing Technique. New York: American Management Association, 1966.

Cita MLA (8a ed.)

Bolton, Ralph A. Systems Contracting: A New Purchasing Technique. American Management Association, 1966.