APA (7e ed.) Bronvermelding

International Bank for Reconstruction and Development & Westebbe, R. M. (1974). Chad, development potential and constraints. World Bank.

Chicago (17e ed.) Bronvermelding

International Bank for Reconstruction and Development en Richard M. Westebbe. Chad, Development Potential and Constraints. Washington: World Bank, 1974.

MLA (9e ed.) Bronvermelding

International Bank for Reconstruction and Development en Richard M. Westebbe. Chad, Development Potential and Constraints. World Bank, 1974.