APA引文

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

Citación estilo Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.