APA

Madden D. J., United States Geological Survey, . (1989). Stratigraphy, depositional environments, and paleogeography of coal bearing strata in the Upper cretaceous Mesaverde Group, Central Grand Hogback, Garfield County, Colorado. Washington, DC: US Gov. Print. Office.

Chicago

Madden Dawn J, United States Geological Survey, . 1989. Stratigraphy, depositional environments, and paleogeography of coal bearing strata in the Upper cretaceous Mesaverde Group, Central Grand Hogback, Garfield County, Colorado. Washington, DC: US Gov. Print. Office.

Harvard

Madden D. J., United States Geological Survey, . (1989). Stratigraphy, depositional environments, and paleogeography of coal bearing strata in the Upper cretaceous Mesaverde Group, Central Grand Hogback, Garfield County, Colorado. Washington, DC: US Gov. Print. Office.

MLA

Madden Dawn J, United States Geological Survey, . Stratigraphy, depositional environments, and paleogeography of coal bearing strata in the Upper cretaceous Mesaverde Group, Central Grand Hogback, Garfield County, Colorado. Washington, DC: US Gov. Print. Office. 1989.