Stromsvik, G. (1947). Guide book to the ruins of Copan. Carnagie Institution of Washington.
Chicago Style (17th ed.) CitationStromsvik, Gustav. Guide Book to the Ruins of Copan. Washington: Carnagie Institution of Washington, 1947.
MLA (9th ed.) CitationStromsvik, Gustav. Guide Book to the Ruins of Copan. Carnagie Institution of Washington, 1947.