Tohutoro APA (7th ed.)
Ellison, S. P. (1950). Subsurface woodford black shale, West Texas and Southeast New Mexico.
Tohutoru Kātū Chicago (17th ed.)
Ellison, Samuel P. Subsurface Woodford Black Shale, West Texas and Southeast New Mexico. Lancaster, Pa, 1950.
Tohutoro MLA (9th ed.)
Ellison, Samuel P. Subsurface Woodford Black Shale, West Texas and Southeast New Mexico. 1950.
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