APA aipamena

Sandhya Aggarwal. (2012). Library services: Challenges and solutions in digital era. ESS ESS Pubs.

Chicago Style aipamena

Sandhya Aggarwal. Library Services: Challenges and Solutions in Digital Era. ESS ESS Pubs, 2012.

MLA aipamena

Sandhya Aggarwal. Library Services: Challenges and Solutions in Digital Era. ESS ESS Pubs, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.