Spongberg, A. L. (2004). PCB concentrations in sediments from the Gulf of Nicoya estuary, Pacific coast of Costa Rica.
استشهاد بنمط شيكاغوSpongberg, Alison L. PCB Concentrations in Sediments From the Gulf of Nicoya Estuary, Pacific Coast of Costa Rica. 2004.
MLA استشهادSpongberg, Alison L. PCB Concentrations in Sediments From the Gulf of Nicoya Estuary, Pacific Coast of Costa Rica. 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.