Παραπομπή APA

Krishan Kumar. (2000). Reference service (5th rev. ed.). Vikas.

Παραπομπή Chicago Style

Krishan Kumar. Reference Service. 5th rev. ed. New Delhi: Vikas, 2000.

Παραπομπή MLA

Krishan Kumar. Reference Service. 5th rev. ed. Vikas, 2000.