Washington (State). Legislature. Senate. Ad Hoc Committee on Historic Preservation & Williams, A. (1981). Historic preservation in the State of Washington: Final report of the Ad Hoc Committee on Historic Preservation of the Washington State Senate. The Committee.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington (State). Legislature. Senate. Ad Hoc Committee on Historic Preservation और Al Williams. Historic Preservation in the State of Washington: Final Report of the Ad Hoc Committee on Historic Preservation of the Washington State Senate. [Olympia, Wash.] (101 Senate Office Building, Olympia 98504): The Committee, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington (State). Legislature. Senate. Ad Hoc Committee on Historic Preservation और Al Williams. Historic Preservation in the State of Washington: Final Report of the Ad Hoc Committee on Historic Preservation of the Washington State Senate. The Committee, 1981.