Naess, Arne (January 1973). "The shallow and the deep, long-range ecology movement. A summary". Inquiry. 16 (1–4): 95–100. doi:10.1080/00201747308601682. S2CID52207763.
Næss, Arne (1989). Ecology, community and lifestyle: outline of an ecosophy Translated by D. Rothenberg. Cambridge: Cambridge University Press. pp. 166, 187. ISBN0521344069. LCCN88005068.
Naess, Arne (January 1973). "The shallow and the deep, long-range ecology movement. A summary". Inquiry. 16 (1–4): 95–100. doi:10.1080/00201747308601682. S2CID52207763.