Cita APA (7th ed.)

Allen, G. R. (1959). Agricultural marketing policies. B. Blackwell.

Cita Chicago (17th ed.)

Allen, George Rollason. Agricultural Marketing Policies. Oxford: B. Blackwell, 1959.

Cita MLA (9th ed.)

Allen, George Rollason. Agricultural Marketing Policies. B. Blackwell, 1959.

Atenció: Aquestes cites poden no estar 100% correctes.