Bookchin, M. (1993). What is social ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M.
Lua i Stíl Chicago (17ú heag.)Bookchin, Murray. What Is Social Ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M, 1993.
Lua MLA (8ú heag.)Bookchin, Murray. What Is Social Ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M, 1993.
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