Stuart, G. E., Stuart, G. S., & Stirling, M. W. (1969). Discovering man's past in the Americas. Washington, D.C: National Geographic Society.
Παραπομπή Chicago StyleStuart, George E., Gene Sl Stuart, and Matthew W. Stirling. Discovering Man's Past in the Americas. Washington, D.C: National Geographic Society, 1969.
Παραπομπή MLAStuart, George E., Gene Sl Stuart, and Matthew W. Stirling. Discovering Man's Past in the Americas. Washington, D.C: National Geographic Society, 1969.
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