Dyfyniad APA

ebrary, Inc, Wingard, J. D., & Hayes, S. E. (2013). Soils, climate & society: Archaeological investigations in ancient America. University Press of Colorado.

Dyfyniad Arddull Chicago

ebrary, Inc, John Davis Wingard, and Sue Eileen Hayes. Soils, Climate & Society: Archaeological Investigations in Ancient America. Boulder: University Press of Colorado, 2013.

Dyfyniad MLA

ebrary, Inc, et al. Soils, Climate & Society: Archaeological Investigations in Ancient America. University Press of Colorado, 2013.

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