HOOK, J. N. All Those Wonderful Names. [s.l.]: Open Road Media 245 s. Dostupné online. ISBN978-1-4976-1186-3. (anglicky) Google-Books-ID: rIq4AwAAQBAJ.
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MEANY, Edmond S. Origin of Washington geographic names,. [s.l.]: Seattle, Dostupné online.