Shankle, G. E. (1933). Washington, state name, flag, seal, song, bird, flower, and other symbols: A study based on historical documents giving the origin and significance of the state name, nicknames, motto, seal, flag, flower, bird, song, and descriptive comments on the capitol building and on some of the outstanding state histories, with facsimiles. H. W. Wilson.
Chicago Style (17th ed.) CitationShankle, George Earlie. Washington, State Name, Flag, Seal, Song, Bird, Flower, and Other Symbols: A Study Based on Historical Documents Giving the Origin and Significance of the State Name, Nicknames, Motto, Seal, Flag, Flower, Bird, Song, and Descriptive Comments on the Capitol Building and on Some of the Outstanding State Histories, with Facsimiles. New York: H. W. Wilson, 1933.
MLA (8th ed.) CitationShankle, George Earlie. Washington, State Name, Flag, Seal, Song, Bird, Flower, and Other Symbols: A Study Based on Historical Documents Giving the Origin and Significance of the State Name, Nicknames, Motto, Seal, Flag, Flower, Bird, Song, and Descriptive Comments on the Capitol Building and on Some of the Outstanding State Histories, with Facsimiles. H. W. Wilson, 1933.