APA ציטוט

Humphreys, T. A. (1967). An O-level additional mathematics. Pergamon Press, Ltd.

Chicago Style (17th ed.) Citation

Humphreys, Thomas A. An O-level Additional Mathematics. Oxford, London: Pergamon Press, Ltd, 1967.

ציטוט MLA

Humphreys, Thomas A. An O-level Additional Mathematics. Pergamon Press, Ltd, 1967.