SAs. (2019). SAS Certified Specialist Prep Guide (1st.). SAS.
Chicago-čujuhus (17. p.)SAs. SAS Certified Specialist Prep Guide. 1st. SAS, 2019.
MLA-čujuhus (9. p.)SAs. SAS Certified Specialist Prep Guide. 1st. SAS, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.