Παραπομπή σε μορφή APA (7η εκδ.)

Hayward, N. (1947). Graded general knowledge and intelligence tests (4th ed.). University Tutorial Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hayward, N.C. Graded General Knowledge and Intelligence Tests. 4th ed. London: University Tutorial Press, 1947.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hayward, N.C. Graded General Knowledge and Intelligence Tests. 4th ed. University Tutorial Press, 1947.