Cita APA

Nelson, L., & Sandell, C. (1991). Population and water resources. Washington, DC: National Audubon Society.

Citación estilo Chicago

Nelson, Lisanne, y Cathie Sandell. Population and Water Resources. Washington, DC: National Audubon Society, 1991.

Cita MLA

Nelson, Lisanne, y Cathie Sandell. Population and Water Resources. Washington, DC: National Audubon Society, 1991.

Precaución: Estas citas no son 100% exactas.