Hayward, N. (1947). Graded general knowledge and intelligence tests (4th ed.). University Tutorial Press.
Chicago Style (17. basım) AtıfHayward, N.C. Graded General Knowledge and Intelligence Tests. 4th ed. London: University Tutorial Press, 1947.
MLA (9th ed.) AtıfHayward, N.C. Graded General Knowledge and Intelligence Tests. 4th ed. University Tutorial Press, 1947.
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