Dement, I. S. (1892). Dement's Pitmanic shorthand manual: Graham's system elucidated, Pitman's system elaborated (2d ed.--thoroughly revised.). I.S. Dement.
Dyfyniad Arddull ChicagoDement, Isaac Strange. Dement's Pitmanic Shorthand Manual: Graham's System Elucidated, Pitman's System Elaborated. 2d ed.--thoroughly revised. Chciago: I.S. Dement, 1892.
Dyfyniad MLADement, Isaac Strange. Dement's Pitmanic Shorthand Manual: Graham's System Elucidated, Pitman's System Elaborated. 2d ed.--thoroughly revised. I.S. Dement, 1892.
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