Dyfyniad APA

Spongberg, A. L. (2004). PCB contamination in surface sediments in the coastal waters of Costa Rica.

Dyfyniad Arddull Chicago

Spongberg, Alison L. PCB Contamination in Surface Sediments in the Coastal Waters of Costa Rica. 2004.

Dyfyniad MLA

Spongberg, Alison L. PCB Contamination in Surface Sediments in the Coastal Waters of Costa Rica. 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.