Cita APA (7a ed.)

Edited by Estall, R. (1991). Global change and challenge: Geography for the 1990s. Routledge.

Cita Chicago Style (17a ed.)

Edited by Estall, Robert. Global Change and Challenge: Geography for the 1990s. London: Routledge, 1991.

Cita MLA (9a ed.)

Edited by Estall, Robert. Global Change and Challenge: Geography for the 1990s. Routledge, 1991.