Williams, C. T. (1979). Elements of research: A guide for writers. Alfred.
Chicago-čujuhus (17. p.)Williams, Carol T. Elements of Research: A Guide for Writers. Sherman Oaks: Alfred, 1979.
MLA-čujuhus (9. p.)Williams, Carol T. Elements of Research: A Guide for Writers. Alfred, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.