APA-referens (7:e uppl.)

GILL, P. S. (2013). A TEXTBOOK OF MACHINE DRAWING (17th.). S.K.KATARIA & SONS.

Chicago-referens (17:e uppl.)

GILL, PRITAM. SINGH. A TEXTBOOK OF MACHINE DRAWING. 17th. NEW DELHI: S.K.KATARIA & SONS, 2013.

MLA-referens (9:e uppl.)

GILL, PRITAM. SINGH. A TEXTBOOK OF MACHINE DRAWING. 17th. S.K.KATARIA & SONS, 2013.