APA-viite

Bews, J. W. (1929). World's grasses: Their differentiation distribution economics and ecology.

Chicago-tyylinen lähdeviittaus

Bews, J W. World's Grasses: Their Differentiation Distribution Economics and Ecology. London, Longman Green and, 1929.

MLA-viite

Bews, J W. World's Grasses: Their Differentiation Distribution Economics and Ecology. 1929.