Keene, J. H. (1896). The mystery of handwriting: A handbook of graphology. Lee and Shepard.
Lua i Stíl Chicago (17ú heag.)Keene, J. Harington. The Mystery of Handwriting: A Handbook of Graphology. Boston: Lee and Shepard, 1896.
Lua MLA (8ú heag.)Keene, J. Harington. The Mystery of Handwriting: A Handbook of Graphology. Lee and Shepard, 1896.
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