APA (7th ed.) Citation

Geological Survey (U.S.), Biewick, L. H., & McLellan, M. W. (1990). Isopach maps, perspective projections, and correlation diagrams of the Paleocene Flowers-Goodale coal resource unit in the northern Powder River Basin, Birney and Broadus 30ʹ x 60ʹ quadrangles, Montana-Wyoming. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Laura H. Biewick, and Marguerite W. McLellan. Isopach Maps, Perspective Projections, and Correlation Diagrams of the Paleocene Flowers-Goodale Coal Resource Unit in the Northern Powder River Basin, Birney and Broadus 30ʹ X 60ʹ Quadrangles, Montana-Wyoming. Reston, Va.: The Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Isopach Maps, Perspective Projections, and Correlation Diagrams of the Paleocene Flowers-Goodale Coal Resource Unit in the Northern Powder River Basin, Birney and Broadus 30ʹ X 60ʹ Quadrangles, Montana-Wyoming. The Survey, 1990.