Cottler, J. The printer and the riddle: The story of Henry George. reproduced by the Henry George School.
Citace podle Chicago (17th ed.)Cottler, Joseph. The Printer and the Riddle: The Story of Henry George. New York: reproduced by the Henry George School.
Citace podle MLA (8th ed.)Cottler, Joseph. The Printer and the Riddle: The Story of Henry George. reproduced by the Henry George School.
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