APA (7th ed.) Citation

Barker, J. L. (1977). Water-quality study of Tulpehocken Creek, Berks County, Pennsylvania, prior to Impoundment of Blue Marsh Lake. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Barker, James L. Water-quality Study of Tulpehocken Creek, Berks County, Pennsylvania, Prior to Impoundment of Blue Marsh Lake. Harrisburg, Pennsylvania: United States Department of the Interior, Geological Survey, 1977.

MLA (9th ed.) Citation

Barker, James L. Water-quality Study of Tulpehocken Creek, Berks County, Pennsylvania, Prior to Impoundment of Blue Marsh Lake. United States Department of the Interior, Geological Survey, 1977.