Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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