Light, A., & Rolston, H. (2003). Environmental ethics: An anthology. Blackwell Pub..
Lua i Stíl Chicago (17ú heag.)Light, Andrew, agus Holmes Rolston. Environmental Ethics: An Anthology. Malden, MA: Blackwell Pub., 2003.
Lua MLA (8ú heag.)Light, Andrew, agus Holmes Rolston. Environmental Ethics: An Anthology. Blackwell Pub., 2003.
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