Wolfgang Sachs. (1999). Planet dialectics: Explorations in environment and development. Fernwood Pub. ; Witwatersrand University Press ; Zed Books.
استشهاد بنمط شيكاغوWolfgang Sachs. Planet Dialectics: Explorations in Environment and Development. Halifax, Nova Scotia : Johannesburg : London: Fernwood Pub. ; Witwatersrand University Press ; Zed Books, 1999.
MLA استشهادWolfgang Sachs. Planet Dialectics: Explorations in Environment and Development. Fernwood Pub. ; Witwatersrand University Press ; Zed Books, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.