Aggarwal, R. S. (1996). Modern approach to non-verbal reasoning. S. Chand & Company ltd.
Chicago Style aipamenaAggarwal, R. S. Modern Approach to Non-verbal Reasoning. New Delhi: S. Chand & Company ltd, 1996.
MLA aipamenaAggarwal, R. S. Modern Approach to Non-verbal Reasoning. S. Chand & Company ltd, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.