Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.