APA (7e ed.) Bronvermelding
(1987). Exercises and test papers for certificate arithmetic. Heinemann Educational publ..
Chicago (17e ed.) Bronvermelding
Exercises and Test Papers for Certificate Arithmetic. London: Heinemann Educational publ., 1987.
MLA (9e ed.) Bronvermelding
Exercises and Test Papers for Certificate Arithmetic. Heinemann Educational publ., 1987.
Let op: Deze citaties zijn niet altijd 100% accuraat.