Washington (State). Department of Ecology. Toxics Investigations Section. (1995). Department of Ecology 1993-94 investigation of PCBs in the Spokane River. Washington State Dept. of Ecology, Toxics Investigations Section, Environmental Investigations and Laboratory Services Program.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington (State). Department of Ecology. Toxics Investigations Section. Department of Ecology 1993-94 Investigation of PCBs in the Spokane River. Olympia, Wash.: Washington State Dept. of Ecology, Toxics Investigations Section, Environmental Investigations and Laboratory Services Program, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington (State). Department of Ecology. Toxics Investigations Section. Department of Ecology 1993-94 Investigation of PCBs in the Spokane River. Washington State Dept. of Ecology, Toxics Investigations Section, Environmental Investigations and Laboratory Services Program, 1995.