Tolley, H., & Thomas, K. (2013). How to pass numeracy tests: Test your knowledge of number problems, data interpretation tests and number sequences (4th ed.). Kogan Page.
Chicago-referens (17:e uppl.)Tolley, Harry, och Ken Thomas. How to Pass Numeracy Tests: Test Your Knowledge of Number Problems, Data Interpretation Tests and Number Sequences. 4th ed. London: Kogan Page, 2013.
MLA-referens (9:e uppl.)Tolley, Harry, och Ken Thomas. How to Pass Numeracy Tests: Test Your Knowledge of Number Problems, Data Interpretation Tests and Number Sequences. 4th ed. Kogan Page, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.