Style de citation APA (7e éd.)

Gallopin, G. C. (1981). Planning methods and the human environment. Unesco.

Style de citation Chicago (17e éd.)

Gallopin, Gilberto C. Planning Methods and the Human Environment. Paris: Unesco, 1981.

Style de citation MLA (9e éd.)

Gallopin, Gilberto C. Planning Methods and the Human Environment. Unesco, 1981.