APA استشهاد

Dhawan, R. K. (2005). textbook of engineering drawing: Geometrical drawing (2nd ed.). S. Chand & Co.

استشهاد بنمط شيكاغو

Dhawan, R. K. Textbook of Engineering Drawing: Geometrical Drawing. 2nd ed. New Delhi: S. Chand & Co, 2005.

MLA استشهاد

Dhawan, R. K. Textbook of Engineering Drawing: Geometrical Drawing. 2nd ed. S. Chand & Co, 2005.