Stamp, L. (1973). An Intermediate commercial geography P-I Commodities & world trade (5th.). Longman Group ltd.
Citazione stile Chigago Style (17a edizione)Stamp, L. An Intermediate Commercial Geography P-I Commodities & World Trade. 5th. London: Longman Group ltd, 1973.
Citatione MLA (9a ed.)Stamp, L. An Intermediate Commercial Geography P-I Commodities & World Trade. 5th. Longman Group ltd, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.