Stamp,, L. D. (1965). A commercial geography (8th ed.). Longmans.
Cita Chicago (17th ed.)Stamp,, L. Dudley. A Commercial Geography. 8th ed. London: Longmans, 1965.
Cita MLA (9th ed.)Stamp,, L. Dudley. A Commercial Geography. 8th ed. Longmans, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.