Feder, K. L. (2004). The past in perspective: An introduction to human prehistory (3rd ed.). McGraw - Hill.
Chicago-čujuhus (17. p.)Feder, Kenneth L. The Past in Perspective: An Introduction to Human Prehistory. 3rd ed. Boston: McGraw - Hill, 2004.
MLA-čujuhus (9. p.)Feder, Kenneth L. The Past in Perspective: An Introduction to Human Prehistory. 3rd ed. McGraw - Hill, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.