Spongberg, A. L. (2006). PCB concentrations in intertidal sipunculan (Phylum Sipuncula) marine worms from the Pacific coast of Costa Rica.
استشهاد بنمط شيكاغوSpongberg, Alison L. PCB Concentrations in Intertidal Sipunculan (Phylum Sipuncula) Marine Worms From the Pacific Coast of Costa Rica. 2006.
MLA استشهادSpongberg, Alison L. PCB Concentrations in Intertidal Sipunculan (Phylum Sipuncula) Marine Worms From the Pacific Coast of Costa Rica. 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.