Welling, M. N. (2018). Statistics Methods (1st.). Manan Prakashan.
Chicago-čujuhus (17. p.)Welling, M N. Statistics Methods. 1st. Manan Prakashan, 2018.
MLA-čujuhus (9. p.)Welling, M N. Statistics Methods. 1st. Manan Prakashan, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.