Thorpe, E. (1989). A course in mental ability and quantitative aptitude... TMH.
Chicago-čujuhus (17. p.)Thorpe, Edgar. A Course in Mental Ability and Quantitative Aptitude... New delhi: TMH, 1989.
MLA-čujuhus (9. p.)Thorpe, Edgar. A Course in Mental Ability and Quantitative Aptitude... TMH, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.