Παραπομπή APA

Heidi Smith. (2008). How to pass numerical reasoning tests. Kogan Page India.

Παραπομπή Chicago Style

Heidi Smith. How to Pass Numerical Reasoning Tests. New Delhi: Kogan Page India, 2008.

Παραπομπή MLA

Heidi Smith. How to Pass Numerical Reasoning Tests. Kogan Page India, 2008.