Dyfyniad APA

Gregory, R. A. (1989). Russell A Gregory's identification of disputed documents, finger prints and ballistics (4th ed.). Eastern Book Company.

Dyfyniad Arddull Chicago

Gregory, Russell A. Russell A Gregory's Identification of Disputed Documents, Finger Prints and Ballistics. 4th ed. Lucknow: Eastern Book Company, 1989.

Dyfyniad MLA

Gregory, Russell A. Russell A Gregory's Identification of Disputed Documents, Finger Prints and Ballistics. 4th ed. Eastern Book Company, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.