Cita APA (7a ed.)
Tiffen, M. (1990). Variability in water supply, incomes and fees: Illustrations of vicious circles from Sudan and Zimbabwe. Overseas Development Institute.
Cita Chicago Style (17a ed.)
Tiffen, M. Variability in Water Supply, Incomes and Fees: Illustrations of Vicious Circles from Sudan and Zimbabwe. Overseas Development Institute, 1990.
Cita MLA (9a ed.)
Tiffen, M. Variability in Water Supply, Incomes and Fees: Illustrations of Vicious Circles from Sudan and Zimbabwe. Overseas Development Institute, 1990.
Precaución: Estas citas no son 100% exactas.