Ervin, K. (1989). Fragile majesty: The battle for North America's last great forest. The Mountaineers.
Cita Chicago Style (17a ed.)Ervin, Keith. Fragile Majesty: The Battle for North America's Last Great Forest. Seattle: The Mountaineers, 1989.
Cita MLA (8a ed.)Ervin, Keith. Fragile Majesty: The Battle for North America's Last Great Forest. The Mountaineers, 1989.
Precaución: Estas citas no son 100% exactas.