Παραπομπή σε μορφή APA (7η εκδ.)

Wu, C. Y. (1973). An analysis of topics and abilities tested in the Singapore-Cambridge G.C.E. O Level Examinations papers in Additional Mathematics (1966-1972) with pertinent comments of the examiners. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wu, Chook Ying. An Analysis of Topics and Abilities Tested in the Singapore-Cambridge G.C.E. O Level Examinations Papers in Additional Mathematics (1966-1972) with Pertinent Comments of the Examiners. Quezon City: [s.n.], 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wu, Chook Ying. An Analysis of Topics and Abilities Tested in the Singapore-Cambridge G.C.E. O Level Examinations Papers in Additional Mathematics (1966-1972) with Pertinent Comments of the Examiners. [s.n.], 1973.