Collier, D. A., & Evans, J. R. (2015). OM (Fifth student edition.). Cengage Learning.
Chicago-čujuhus (17. p.)Collier, David A., juo James R. Evans. OM. Fifth student edition. Boston, MA.: Cengage Learning, 2015.
MLA-čujuhus (9. p.)Collier, David A., juo James R. Evans. OM. Fifth student edition. Cengage Learning, 2015.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.
