एपीए उद्धरण

Indian Standards Institution. (1979). Indian Standard: Specification for High Density Polyethylene Pipes for Water Supplies, Sewage and Industrial Effluents. Indian Standards Institution.

शिकागो स्टाइल उद्धरण

Indian Standards Institution. Indian Standard: Specification for High Density Polyethylene Pipes for Water Supplies, Sewage and Industrial Effluents. N.Delhi: Indian Standards Institution, 1979.

एमएलए उद्धरण

Indian Standards Institution. Indian Standard: Specification for High Density Polyethylene Pipes for Water Supplies, Sewage and Industrial Effluents. Indian Standards Institution, 1979.