GUPTA S P. STATISTICAL METHODS.
Chicago-čujuhus (17. p.)GUPTA S P. STATISTICAL METHODS.
MLA-čujuhus (9. p.)GUPTA S P. STATISTICAL METHODS.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.
APA-čujuhus (7. p.)