APA (7th ed.) Citation

Imlay, R. W. (1967). Twin Creek limestone (Jurassic) in the western interior of the United States. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Imlay, Ralph W. Twin Creek Limestone (Jurassic) in the Western Interior of the United States. Washington: United States Department of the Interior, Geological Survey, 1967.

MLA (9th ed.) Citation

Imlay, Ralph W. Twin Creek Limestone (Jurassic) in the Western Interior of the United States. United States Department of the Interior, Geological Survey, 1967.