Calkins, F. C. (1905). Geology and water resources of a portion of east-central Washington. U.S. Geological Survey.
Цитирование в стиле Чикаго (17-е изд.)Calkins, Frank C. Geology and Water Resources of a Portion of East-central Washington. Washington, D.C.: U.S. Geological Survey, 1905.
Цитирование MLA (8-е изд.)Calkins, Frank C. Geology and Water Resources of a Portion of East-central Washington. U.S. Geological Survey, 1905.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.