Cita APA

Borns, J., & Maasch, K. A. (2015). Foot Steps of the Ancient Great Glacier of North America. Springer.

Chicago Style Citation

Borns, Jr, i Kirk Allen Maasch. Foot Steps of the Ancient Great Glacier of North America. Springer, 2015.

Cita MLA

Borns, Jr, i Kirk Allen Maasch. Foot Steps of the Ancient Great Glacier of North America. Springer, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.