Foot Steps of the Ancient Great Glacier of North America

MLA

Harold W. Borns, Jr, and Kirk Allen Maasch. Foot Steps of the Ancient Great Glacier of North America. Springer International Publishing, 2015.

APA

Harold W. Borns, J., & Maasch, K. Allen. (2015). Foot Steps of the Ancient Great Glacier of North America. Springer International Publishing.

Chicago

Harold W. Borns, Jr., and Kirk Allen Maasch. Foot Steps of the Ancient Great Glacier of North America. : Springer International Publishing, 2015.