Cita APA (7a ed.)

Barrett, J., & Willams, G. (2002). Test your own aptitude. Kogan Page.

Cita Chicago Style (17a ed.)

Barrett, Jim, y Geoff Willams. Test Your Own Aptitude. New Delhi: Kogan Page, 2002.

Cita MLA (8a ed.)

Barrett, Jim, y Geoff Willams. Test Your Own Aptitude. Kogan Page, 2002.