Gregory, R. A. (1989). Russell A Gregory's identification of disputed documents, finger prints and ballistics (4th ed.). Eastern Book Company.
استشهاد بنمط شيكاغوGregory, Russell A. Russell A Gregory's Identification of Disputed Documents, Finger Prints and Ballistics. 4th ed. Lucknow: Eastern Book Company, 1989.
MLA استشهادGregory, Russell A. Russell A Gregory's Identification of Disputed Documents, Finger Prints and Ballistics. 4th ed. Eastern Book Company, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.