Kirkham, V. R. D. (1935). Natural gas in Washington, Idaho, eastern Oregon, and northern Utah. American Society of Petroleum Geologists.
Цитирование в стиле Чикаго (17-е изд.)Kirkham, Virgil R. D. Natural Gas in Washington, Idaho, Eastern Oregon, and Northern Utah. [n.p.]: American Society of Petroleum Geologists, 1935.
Цитирование MLA (8-е изд.)Kirkham, Virgil R. D. Natural Gas in Washington, Idaho, Eastern Oregon, and Northern Utah. American Society of Petroleum Geologists, 1935.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.