Cita APA (7a ed.)

Williams, M. (1990). Wetlands: A threatened landscape. Basil Blackwell.

Cita Chicago Style (17a ed.)

Williams, Michael. Wetlands: A Threatened Landscape. Oxford: Basil Blackwell, 1990.

Cita MLA (9a ed.)

Williams, Michael. Wetlands: A Threatened Landscape. Basil Blackwell, 1990.