Harlow, G. E., & Peters, J. J. (1994). Minerals and gems: From the American Museum of Natural History. New York: Abbeville Press Publishers.
Παραπομπή Chicago StyleHarlow, George E., and Joseph J. Peters. Minerals and Gems: From the American Museum of Natural History. New York: Abbeville Press Publishers, 1994.
Παραπομπή MLAHarlow, George E., and Joseph J. Peters. Minerals and Gems: From the American Museum of Natural History. New York: Abbeville Press Publishers, 1994.
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