Van Loon, H. W. (1932). Van Loon's Geography: The story of the world we live in. New York: Simon and Schuster.
Stile di citazione ChicagoVan Loon, Hendrik Willem. Van Loon's Geography: The Story of the World We Live in. New York: Simon and Schuster, 1932.
Citazione MLAVan Loon, Hendrik Willem. Van Loon's Geography: The Story of the World We Live in. New York: Simon and Schuster, 1932.
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