Gill, P. (2009). Textbook of engineering drawing: Geometrical drawing (11th ed.). S.K. Kataria.
Čikaški stil citiranjaGill, P.S. Textbook of Engineering Drawing: Geometrical Drawing. 11th ed. New Delhi: S.K. Kataria, 2009.
MLA način citiranjaGill, P.S. Textbook of Engineering Drawing: Geometrical Drawing. 11th ed. S.K. Kataria, 2009.
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