APA (7th ed.) Citation

Barrett & Williams. (2002). Test your own aptitude (2nd ed.). Kogan Page.

Chicago Style (17th ed.) Citation

Barrett and Williams. Test Your Own Aptitude. 2nd ed. New Delhi: Kogan Page, 2002.

MLA (8th ed.) Citation

Barrett and Williams. Test Your Own Aptitude. 2nd ed. Kogan Page, 2002.