Παραπομπή APA

Gurdev Singh. (2007). Introduction to computers for library professionals. Ess Ess.

Παραπομπή Chicago Style

Gurdev Singh. Introduction to Computers for Library Professionals. New Delhi: Ess Ess, 2007.

Παραπομπή MLA

Gurdev Singh. Introduction to Computers for Library Professionals. Ess Ess, 2007.