Giesecke Frederick E, Cecil Spencer Henry, E. Novak James, Leroy Hill Ivan, Mitchell Alava, & Thomas Dygdon John. (2003). TECHNICAL DRAWING (Tái bản lần thứ 12.). New Jersey: Pearson Education, Inc.
শিকাগো স্টাইলে সাইটেশনGiesecke Frederick E, Cecil Spencer Henry, E. Novak James, Leroy Hill Ivan, Mitchell Alava, এবং Thomas Dygdon John. TECHNICAL DRAWING. Tái bản lần thứ 12. New Jersey: Pearson Education, Inc, 2003.
এমএলএ সাইটেশনGiesecke Frederick E, et al. TECHNICAL DRAWING. Tái bản lần thứ 12. New Jersey: Pearson Education, Inc, 2003.
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