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-viite (17. p.)Tolley, Harry, ja 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-viite (9. p.)Tolley, Harry, ja Ken Thomas. How to Pass Numeracy Tests: Test Your Knowledge of Number Problems, Data Interpretation Tests and Number Sequences. 4th ed. Kogan Page, 2013.
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