APA-čujuhus (7. p.)
Guthery, F. S. (2008). A primer on natural resource science. Texas A&M University Press.
Chicago-čujuhus (17. p.)
Guthery, Fred S. A Primer on Natural Resource Science. College Station: Texas A&M University Press, 2008.
MLA-čujuhus (9. p.)
Guthery, Fred S. A Primer on Natural Resource Science. Texas A&M University Press, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.