Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Ayres, Robert U., Kenneth John Button, y Peter Nijkamp. Global Aspects of the Environment. Cheltenham [etc.]: Edward Elgar, 1999.

Cita MLA (9a ed.)

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