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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington (State). Legislature. Senate. Ad Hoc Committee on Historic Preservation و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington (State). Legislature. Senate. Ad Hoc Committee on Historic Preservation و 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.