APA (7th ed.) Zitazioa
Gill, P. (2009). Engineering drawing: Geometrical drawing (11th ed.). S.K.Kataria & Sons.
Chicago Style (17th ed.) Zitazioa
Gill, P.S. Engineering Drawing: Geometrical Drawing. 11th ed. New Delhi: S.K.Kataria & Sons, 2009.
MLA (9th ed.) Zitazioa
Gill, P.S. Engineering Drawing: Geometrical Drawing. 11th ed. S.K.Kataria & Sons, 2009.
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