Παραπομπή APA

Sehgal, R. (1993). Number Building in Dewey Decimal Classification,Universal Decimal Classification,Colon Classification. Ess Ess Publications.

Παραπομπή Chicago Style

Sehgal, R.L. Number Building in Dewey Decimal Classification,Universal Decimal Classification,Colon Classification. New Delhi: Ess Ess Publications, 1993.

Παραπομπή MLA

Sehgal, R.L. Number Building in Dewey Decimal Classification,Universal Decimal Classification,Colon Classification. Ess Ess Publications, 1993.