United States. Army. Corps of Engineers. Seattle District. Environmental Resources Section & University of Washington. Institute for Environmental Studies. (1975). Washington environmental atlas (2d ed.). The Section ; for sale by the Supt. of Docs., U.S. Govt. Print. Off..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Army. Corps of Engineers. Seattle District. Environmental Resources Section و University of Washington. Institute for Environmental Studies. Washington Environmental Atlas. 2d ed. Seattle, Wash. : Washington: The Section ; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Army. Corps of Engineers. Seattle District. Environmental Resources Section و University of Washington. Institute for Environmental Studies. Washington Environmental Atlas. 2d ed. The Section ; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975.