Παραπομπή APA

Sehgal, R. (1993). Number building in Dewey Decimal Classification, Universal Decimal Classification, Colon Classification (1st.). Ess Ess.

Παραπομπή Chicago Style

Sehgal, R.L. Number Building in Dewey Decimal Classification, Universal Decimal Classification, Colon Classification. 1st. New Delhi: Ess Ess, 1993.

Παραπομπή MLA

Sehgal, R.L. Number Building in Dewey Decimal Classification, Universal Decimal Classification, Colon Classification. 1st. Ess Ess, 1993.