Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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