MLA

Bookchin, Murray, et al. Defending the Earth : a Dialogue Between Murray Bookchin and Dave Foreman. Boston, Mass.: South End Press, 1991.

APA

Bookchin, M., Chase, S., Foreman, D., & Levine, D. (1991). Defending the earth : a dialogue between Murray Bookchin and Dave Foreman. Boston, Mass.: South End Press.

Chicago

Bookchin, Murray, Steve Chase, Dave Foreman, and David Levine. Defending the Earth: A Dialogue Between Murray Bookchin and Dave Foreman. Boston, Mass.: South End Press, 1991.