रिकॉर्ड उद्धरण

एपीए उद्धरण

Indian standards institution . ISI. (1987). Specification for hot rolled steel section for doors ,windows and ventilators,IS: 7452-1982. Indian Standards Institution.

शिकागो स्टाइल उद्धरण

Indian standards institution . ISI. Specification for Hot Rolled Steel Section for Doors ,windows and Ventilators,IS: 7452-1982. New Delhi: Indian Standards Institution, 1987.

एमएलए उद्धरण

Indian standards institution . ISI. Specification for Hot Rolled Steel Section for Doors ,windows and Ventilators,IS: 7452-1982. Indian Standards Institution, 1987.

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