APA (7th ed.) Zitazioa
Barrett, J. (2007). Test your numerical aptitude: How to assess your numeracy skills and plan your career. Kogan Page.
Chicago Style (17th ed.) Zitazioa
Barrett, James. Test Your Numerical Aptitude: How to Assess Your Numeracy Skills and Plan Your Career. London ; Philadelphia: Kogan Page, 2007.
MLA (9th ed.) Zitazioa
Barrett, James. Test Your Numerical Aptitude: How to Assess Your Numeracy Skills and Plan Your Career. Kogan Page, 2007.
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