Wall, D. (1999). Earth First! and the anti-roads movement: Radical environmentalism and comparative social movements. Routledge.
Chicago-referens (17:e uppl.)Wall, Derek. Earth First! and the Anti-roads Movement: Radical Environmentalism and Comparative Social Movements. London ; New York: Routledge, 1999.
MLA-referens (9:e uppl.)Wall, Derek. Earth First! and the Anti-roads Movement: Radical Environmentalism and Comparative Social Movements. Routledge, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.