Thorpe, E. (1989). A course in mental ability and quantitative aptitude... TMH.
Lua i Stíl Chicago (17ú heag.)Thorpe, Edgar. A Course in Mental Ability and Quantitative Aptitude... New delhi: TMH, 1989.
Lua MLA (9ú heag.)Thorpe, Edgar. A Course in Mental Ability and Quantitative Aptitude... TMH, 1989.
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