Huntington, E. (1947). Mainspring of civilization. John Willey and Sons.
Chicago Style CitationHuntington, Ellsworth. Mainspring of Civilization. John Willey and Sons, 1947.
MLA CitationHuntington, Ellsworth. Mainspring of Civilization. John Willey and Sons, 1947.
Warning: These citations may not always be 100% accurate.