COX J.B./współaut/ 193,159 zob. WANKOWSKI J. A. Temperament, motivation and academic achievement. Stud lei of success and failure of a Random Sample of students in one university. Compiled and written by... Statistical supervision and cohort method by J. B. Cox. Birmingham 1973 University of Birmingham Educational Survey 4° Vol. 2. Tables.k. nlb.1, XVII,112,ilustr.