Παραπομπή APA

Jim Barrett & Geoff Williams. (2002). Test your own aptitude. Kogan Page.

Παραπομπή Chicago Style

Jim Barrett και Geoff Williams. Test Your Own Aptitude. New Delhi: Kogan Page, 2002.

Παραπομπή MLA

Jim Barrett και Geoff Williams. Test Your Own Aptitude. Kogan Page, 2002.