APA (7th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey & Glover, A. D. (1990). Coal resources of Cambria and Blair Counties, Pennsylvania. [Commonwealth of Pennsylvania, Dept. of the Environmental Resources, Office of Resources Management, Topographic and Geologic Survey].

Chicago Style (17th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey and Albert D. Glover. Coal Resources of Cambria and Blair Counties, Pennsylvania. Harrisburg, Pa.: [Commonwealth of Pennsylvania, Dept. of the Environmental Resources, Office of Resources Management, Topographic and Geologic Survey], 1990.

MLA (8th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey and Albert D. Glover. Coal Resources of Cambria and Blair Counties, Pennsylvania. [Commonwealth of Pennsylvania, Dept. of the Environmental Resources, Office of Resources Management, Topographic and Geologic Survey], 1990.