Citazione Stile APA (7a Edizione)

Ayres, R. U., Button, K., & Nijkamp, P. (1999). Global aspects of the environment. Edward Elgar Pub. Ltd.

Citazione stile Chigago Style (17a edizione)

Ayres, Robert U., Kenneth Button, e Peter Nijkamp. Global Aspects of the Environment. Cheltenham, U.K: Edward Elgar Pub. Ltd, 1999.

Citatione MLA (9a ed.)

Ayres, Robert U., et al. Global Aspects of the Environment. Edward Elgar Pub. Ltd, 1999.