Clark, G. Space, time and man: A prehistorian's view. Cambridge.
Cita Chicago (17th ed.)Clark, Grahame. Space, Time and Man: A Prehistorian's View. 1994: Cambridge.
Cita MLA (9th ed.)Clark, Grahame. Space, Time and Man: A Prehistorian's View. Cambridge.
Atenció: Aquestes cites poden no estar 100% correctes.