Παραπομπή APA

Dhawan, K. S. A. (1997). Principles of information retrieval.

Παραπομπή Chicago Style

Dhawan, K S; Author. Principles of Information Retrieval. New Delhi, Commonwealth Publishers, 1997.

Παραπομπή MLA

Dhawan, K S; Author. Principles of Information Retrieval. 1997.