APA (7th ed.) Citation

Geological Survey (U.S.), Culbertson, W. C., & Saperstone, H. I. (1987). Structure, coal thickness, and overburden thickness of the Wall Coal Resource Unit, west half of the Birney 30ʹ x 60ʹ quadrangle, Big Horn and Rosebud counties, Montana. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), William Craven Culbertson, and Herb I. Saperstone. Structure, Coal Thickness, and Overburden Thickness of the Wall Coal Resource Unit, West Half of the Birney 30ʹ X 60ʹ Quadrangle, Big Horn and Rosebud Counties, Montana. Reston, Va.: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Structure, Coal Thickness, and Overburden Thickness of the Wall Coal Resource Unit, West Half of the Birney 30ʹ X 60ʹ Quadrangle, Big Horn and Rosebud Counties, Montana. The Survey, 1987.