एपीए उद्धरण

Ragbirsingh, Y., & Norville, W. (2005). A Geographic Information System (GIS) analysis for trace metal assessment of sediments in the Gulf of Paria, Trinidad.

शिकागो स्टाइल उद्धरण

Ragbirsingh, Yosha, और Wendy Norville. A Geographic Information System (GIS) Analysis for Trace Metal Assessment of Sediments in the Gulf of Paria, Trinidad. 2005.

एमएलए उद्धरण

Ragbirsingh, Yosha, और Wendy Norville. A Geographic Information System (GIS) Analysis for Trace Metal Assessment of Sediments in the Gulf of Paria, Trinidad. 2005.