Παραπομπή APA

Williams, C. C., & Haughton, G. (1994). Perspectives towards sustainable environmental development. Aldershot: Ashgate.

Παραπομπή Chicago Style

Williams, Colin C., and Graham Haughton. Perspectives Towards Sustainable Environmental Development. Aldershot: Ashgate, 1994.

Παραπομπή MLA

Williams, Colin C., and Graham Haughton. Perspectives Towards Sustainable Environmental Development. Aldershot: Ashgate, 1994.

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