Παραπομπή APA

Madan Mohan Singh. (2013). Reference sources and services in Library Science. Centrum Press.

Παραπομπή Chicago Style

Madan Mohan Singh. Reference Sources and Services in Library Science. New Delhi: Centrum Press, 2013.

Παραπομπή MLA

Madan Mohan Singh. Reference Sources and Services in Library Science. Centrum Press, 2013.