Παραπομπή APA

Umapathy K S. (1978). Information Sources. Vikas Publishing House Pvt. Ltd.

Παραπομπή Chicago Style

Umapathy K S. Information Sources. Delhi: Vikas Publishing House Pvt. Ltd, 1978.

Παραπομπή MLA

Umapathy K S. Information Sources. Vikas Publishing House Pvt. Ltd, 1978.