Hardless, H. R. (1979). Handwriting and thumbprint identification and forensic science (2d ed.). Law Book Co..
Chicago-referens (17:e uppl.)Hardless, H. R. Handwriting and Thumbprint Identification and Forensic Science. 2d ed. Allahabad: Law Book Co., 1979.
MLA-referens (8:e uppl.)Hardless, H. R. Handwriting and Thumbprint Identification and Forensic Science. 2d ed. Law Book Co., 1979.
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