Luedtke, B. E. (1992). An archaeologist's guide to chert and flint. Institute of Archaeology, University of California.
Dyfyniad Arddull ChicagoLuedtke, Barbara E. An Archaeologist's Guide to Chert and Flint. Los Angeles: Institute of Archaeology, University of California, 1992.
Dyfyniad MLALuedtke, Barbara E. An Archaeologist's Guide to Chert and Flint. Institute of Archaeology, University of California, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.