Παραπομπή APA

Wright, R. T., & Bernard, N. J. (2002). Environmental science towards a sustainable future (8th ed.). Prentice-Hall of India.

Παραπομπή Chicago Style

Wright, Richard T., και Nebel J. Bernard. Environmental Science Towards a Sustainable Future. 8th ed. New Delhi: Prentice-Hall of India, 2002.

Παραπομπή MLA

Wright, Richard T., και Nebel J. Bernard. Environmental Science Towards a Sustainable Future. 8th ed. Prentice-Hall of India, 2002.