APA (7th ed.) Zitazioa
Singh, G., Singh, G., & Chander, S. (2007). Civil engineering drawing. New Delhi.
Chicago Style (17th ed.) Zitazioa
Singh, Grucharan, Gurcharan Singh, eta Subhash Chander. Civil Engineering Drawing. Standard: New Delhi, 2007.
MLA (9th ed.) Zitazioa
Singh, Grucharan, et al. Civil Engineering Drawing. New Delhi, 2007.
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