Williams, H. (1953). The ancient volcanoes of Oregon (2d ed.). Oregon State System of Higher Education.
Style de citation Chicago (17e éd.)Williams, Howel. The Ancient Volcanoes of Oregon. 2d ed. Eugene: Oregon State System of Higher Education, 1953.
Style de citation MLA (8e éd.)Williams, Howel. The Ancient Volcanoes of Oregon. 2d ed. Oregon State System of Higher Education, 1953.
Attention : ces citations peuvent ne pas être correctes à 100%.