APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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