Παραπομπή APA

Gill,S P. (2010). A text book of engineering drawing: :geometrical drawing (Ed.11.). S K Kataria.

Παραπομπή Chicago Style

Gill,S P. A Text Book of Engineering Drawing: :geometrical Drawing. Ed.11. New Delhi: S K Kataria, 2010.

Παραπομπή MLA

Gill,S P. A Text Book of Engineering Drawing: :geometrical Drawing. Ed.11. S K Kataria, 2010.