APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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