Cita APA

Barrett, J., & Williams, G. (2007). Test your own aptitude (3rd.). Kogan Page.

Chicago Edition Citation

Barrett, Jim, i Geoff Williams. Test Your Own Aptitude. 3rd. New Delhi: Kogan Page, 2007.

Cita MLA

Barrett, Jim, i Geoff Williams. Test Your Own Aptitude. 3rd. Kogan Page, 2007.