Richek, M. A. (1989). The world of words: Vocabulary for college students (2nd ed.). Houghton.
Chicago-čujuhus (17. p.)Richek, Margaret Ann. The World of Words: Vocabulary for College Students. 2nd ed. Boston: Houghton, 1989.
MLA-čujuhus (9. p.)Richek, Margaret Ann. The World of Words: Vocabulary for College Students. 2nd ed. Houghton, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.