Cita APA (7a ed.)
Seckler, D., Barker, R., & Amarasinghe, U. A. (1999). Water scarcity in the twenty-first century. Informa UK Limited.
Cita Chicago Style (17a ed.)
Seckler, D., Randolph Barker, y Upali A. Amarasinghe. Water Scarcity in the Twenty-first Century. Informa UK Limited, 1999.
Cita MLA (9a ed.)
Seckler, D., et al. Water Scarcity in the Twenty-first Century. Informa UK Limited, 1999.
Precaución: Estas citas no son 100% exactas.