James Williams. (1950). Principles of psychology (ed.). Dover publications.
Chicago-čujuhus (17. p.)James Williams. Principles of Psychology. ed. Dover publications, 1950.
MLA-čujuhus (9. p.)James Williams. Principles of Psychology. ed. Dover publications, 1950.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.