Williams, C. (1988). Mount St. Helens National Volcanic Monument: A pocket guide for hikers, viewers, and skiers. Mountaineers.
Style de citation Chicago (17e éd.)Williams, Chuck. Mount St. Helens National Volcanic Monument: A Pocket Guide for Hikers, Viewers, and Skiers. Seattle: Mountaineers, 1988.
Style de citation MLA (8e éd.)Williams, Chuck. Mount St. Helens National Volcanic Monument: A Pocket Guide for Hikers, Viewers, and Skiers. Mountaineers, 1988.
Attention : ces citations peuvent ne pas être correctes à 100%.