Gardner, C. (1989). Aural tests in mathematics. John Murray.
Chicago Style (17th ed.) CitationGardner, Christopher. Aural Tests in Mathematics. London: John Murray, 1989.
MLA (9th ed.) CitationGardner, Christopher. Aural Tests in Mathematics. John Murray, 1989.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.