APA-viite

Chambers,Robert, & Clay,Edward J. (1981). Food policy issues in low-income countries. World Bank.

Chicago-tyylinen lähdeviittaus

Chambers,Robert, ja Clay,Edward J. Food Policy Issues in Low-income Countries. Washington: World Bank, 1981.

MLA-viite

Chambers,Robert, ja Clay,Edward J. Food Policy Issues in Low-income Countries. World Bank, 1981.