Franklin

MLA

Keith, M. L. Trace Metals In Stream Sediment of Southeastern Pennsylvania. University Park: College of Earth and Mineral Sciences, Pennsylvania State University, 1967.

APA

Keith, M. L. (1967). Trace metals in stream sediment of southeastern Pennsylvania. University Park: College of Earth and Mineral Sciences, Pennsylvania State University.

Chicago

Keith, M. L. Trace Metals In Stream Sediment of Southeastern Pennsylvania. University Park: College of Earth and Mineral Sciences, Pennsylvania State University, 1967.