Bookchin, M. (1993). What is social ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M.
Cita Chicago (17th ed.)Bookchin, Murray. What Is Social Ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M, 1993.
Cita MLA (8th ed.)Bookchin, Murray. What Is Social Ecology? Englewood Cliffs (New Jersey): Zimmerman, E.M, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.