Jillson, W. R. (1920). The oil and gas resources of Kentucky: A geological review of the past development and the present status of the industry in each of the one hundred and twenty counties of the commonwealth (2d ed.). Kentucky Geological Survey.
Chicago Style (17th ed.) CitationJillson, Willard Rouse. The Oil and Gas Resources of Kentucky: A Geological Review of the Past Development and the Present Status of the Industry in Each of the One Hundred and Twenty Counties of the Commonwealth. 2d ed. Frankfort, Ky.: Kentucky Geological Survey, 1920.
MLA (9th ed.) CitationJillson, Willard Rouse. The Oil and Gas Resources of Kentucky: A Geological Review of the Past Development and the Present Status of the Industry in Each of the One Hundred and Twenty Counties of the Commonwealth. 2d ed. Kentucky Geological Survey, 1920.