Παραπομπή APA

Lafferty, W. M., & Eckerberg, K. (1998). From the earth summit to local agenda 21: Working towards sustainable development. London: Earthscan.

Παραπομπή Chicago Style

Lafferty, William M., and Katarina Eckerberg. From the Earth Summit to Local Agenda 21: Working Towards Sustainable Development. London: Earthscan, 1998.

Παραπομπή MLA

Lafferty, William M., and Katarina Eckerberg. From the Earth Summit to Local Agenda 21: Working Towards Sustainable Development. London: Earthscan, 1998.

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