International Organization for Standardization. (1981). Statistical methods (2nd ed.). ISO Central Secretariat.
Chicago-čujuhus (17. p.)International Organization for Standardization. Statistical Methods. 2nd ed. Geneva: ISO Central Secretariat, 1981.
MLA-čujuhus (9. p.)International Organization for Standardization. Statistical Methods. 2nd ed. ISO Central Secretariat, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.