Citazione Stile APA (7a Edizione)

Duncan, R. C. (1984). The outlook for primary commodities, 1984-1995. World Bank.

Citazione stile Chigago Style (17a edizione)

Duncan, Ronald C. The Outlook for Primary Commodities, 1984-1995. Washington: World Bank, 1984.

Citatione MLA (9a ed.)

Duncan, Ronald C. The Outlook for Primary Commodities, 1984-1995. World Bank, 1984.