APA-čujuhus (7. p.)
Frodeman, R. (2003). Geo-logic: Breaking ground between philosophy and the earth sciences. State University of New York Press.
Chicago-čujuhus (17. p.)
Frodeman, Robert. Geo-logic: Breaking Ground Between Philosophy and the Earth Sciences. Albany: State University of New York Press, 2003.
MLA-čujuhus (9. p.)
Frodeman, Robert. Geo-logic: Breaking Ground Between Philosophy and the Earth Sciences. State University of New York Press, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.