Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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