Παραπομπή APA

Worldwatch Institute., & Starke, L. (2007). State of the world 2007: A Worldwatch Institute report on progress toward a sustainable society (24th ed.). London: Earthscan.

Παραπομπή Chicago Style

Worldwatch Institute., and Linda Starke. State of the World 2007: A Worldwatch Institute Report On Progress Toward a Sustainable Society. 24th ed. London: Earthscan, 2007.

Παραπομπή MLA

Worldwatch Institute., and Linda Starke. State of the World 2007: A Worldwatch Institute Report On Progress Toward a Sustainable Society. 24th ed. London: Earthscan, 2007.

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