Webb, Robin. Animal Liberation — By 'Whatever Means Necessary'. Best, Steven; Nocella, Anthony J. (编). Terrorists or Freedom Fighters. Lantern Books. 2004: 77.
Joosse, Paul. Leaderless Resistance and Ideological Inclusion: the Case of the Earth Liberation Front. Terrorism and Political Violence. 2007, 19 (3): 351–368. S2CID 17532687. doi:10.1080/09546550701424042.
Bron Taylor(英语:Bron Taylor), 1998. Religion, Violence and Radical Environmentalism: From Earth First! to the Unabomber to the Earth Liberation Front, Terrorism and Political Violence 10(4):1-42 doi:10.1080/09546559808427480
Joosse, Paul. Leaderless Resistance and Ideological Inclusion: the Case of the Earth Liberation Front. Terrorism and Political Violence. 2007, 19 (3): 351–368. S2CID 17532687. doi:10.1080/09546550701424042.
Bron Taylor(英语:Bron Taylor), 1998. Religion, Violence and Radical Environmentalism: From Earth First! to the Unabomber to the Earth Liberation Front, Terrorism and Political Violence 10(4):1-42 doi:10.1080/09546559808427480