Washington (State). Division of Mines and Mining, Washington (State). Division of Mines and Geology, & Washington (State). Division of Geology and Earth Resources. Directory of Washington mining operations. Department of Conservation and Development, Division of Mines and Geology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington (State). Division of Mines and Mining, Washington (State). Division of Mines and Geology, और Washington (State). Division of Geology and Earth Resources. Directory of Washington Mining Operations. Olympia, Wash.: Department of Conservation and Development, Division of Mines and Geology.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington (State). Division of Mines and Mining, et al. Directory of Washington Mining Operations. Department of Conservation and Development, Division of Mines and Geology.