Cita APA (7th ed.)
Gill, P. S. (2001). A Textbook of machine drawing (17th ed.). S. K. Kataria.
Cita Chicago (17th ed.)
Gill, P. S. A Textbook of Machine Drawing. 17th ed. Delhi: S. K. Kataria, 2001.
Cita MLA (9th ed.)
Gill, P. S. A Textbook of Machine Drawing. 17th ed. S. K. Kataria, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.