APA
Stuart G. E., Stuart G. S., Stirling M. W. & National Geographic Society. U.S. (1969). Discovering man’s past in the Americas. Washington: National Geographic Society.
Chicago
Stuart George E, Stuart Gene S, Stirling Matthew W and National Geographic Society. U.S. 1969. Discovering man’s past in the Americas. Washington: National Geographic Society.
Harvard
Stuart G. E., Stuart G. S., Stirling M. W. and National Geographic Society. U.S. (1969). Discovering man’s past in the Americas. Washington: National Geographic Society.
MLA
Stuart George E, Stuart Gene S, Stirling Matthew W and National Geographic Society. U.S. Discovering man’s past in the Americas. Washington: National Geographic Society. 1969.
