Planet earth :
GEOSC 20 (GN) : Department of Geosciences, College of Earth and Mineral Sciences /
written by John R. Ousey.

APA Citation

Ousey, J. Russell., Pennsylvania State University. Dept. of Geosciences., Pennsylvania State University. Dept. of Distance Education. Independent Learning Program. (1995). Planet earth: GEOSC 20 (GN) : Department of Geosciences, College of Earth and Mineral Sciences. University Park, PA: Independent Learning Program, Dept. of Distance Education, Division of Continuing and Distance Education.

MLA Citation

Ousey, John Russell, 1943-, Pennsylvania State University. Dept. of Geosciences, and Pennsylvania State University. Dept. of Distance Education. Independent Learning Program. Planet Earth: GEOSC 20 (GN) : Department of Geosciences, College of Earth And Mineral Sciences. University Park, PA: Independent Learning Program, Dept. of Distance Education, Division of Continuing and Distance Education, 1995.

Warning: These citations may not always be complete (especially for serials).