एपीए उद्धरण

Kumar & Garg. (1998). Indian industry & trade classification with NIC codes (7th ed.). Anupam.

शिकागो स्टाइल उद्धरण

Kumar और Garg. Indian Industry & Trade Classification with NIC Codes. 7th ed. New Delhi: Anupam, 1998.

एमएलए उद्धरण

Kumar और Garg. Indian Industry & Trade Classification with NIC Codes. 7th ed. Anupam, 1998.