GRAVELLS, A. (2014). Achieving your assessor and quality assurance units (TAQA). Sage Publications.
Chicago-čujuhus (17. p.)GRAVELLS, Ann. Achieving Your Assessor and Quality Assurance Units (TAQA). Sage Publications, 2014.
MLA-čujuhus (9. p.)GRAVELLS, Ann. Achieving Your Assessor and Quality Assurance Units (TAQA). Sage Publications, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.