ebrary, Inc, Wingard, J. D., & Hayes, S. E. (2013). Soils, climate & society: Archaeological investigations in ancient America. University Press of Colorado.
Chicago-referens (17:e uppl.)ebrary, Inc, John Davis Wingard, och Sue Eileen Hayes. Soils, Climate & Society: Archaeological Investigations in Ancient America. Boulder: University Press of Colorado, 2013.
MLA-referens (9:e uppl.)ebrary, Inc, et al. Soils, Climate & Society: Archaeological Investigations in Ancient America. University Press of Colorado, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.