APA (7th ed.) Citation

Repenning, C. A., & Brouwers, E. M. (1993). Late Pliocene-Early Pleistocene ecologic changes in the Arctic Ocean Borderland. U.S. G.P.O. ; U.S.Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Repenning, Charles Albert, and Elisabeth M. Brouwers. Late Pliocene-Early Pleistocene Ecologic Changes in the Arctic Ocean Borderland. Washington : [Reston, Va.]: U.S. G.P.O. ; U.S.Dept. of the Interior, U.S. Geological Survey, 1993.

MLA (9th ed.) Citation

Repenning, Charles Albert, and Elisabeth M. Brouwers. Late Pliocene-Early Pleistocene Ecologic Changes in the Arctic Ocean Borderland. U.S. G.P.O. ; U.S.Dept. of the Interior, U.S. Geological Survey, 1993.