Cita APA

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

Citación estilo Chicago

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

Cita MLA

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