Dyfyniad APA
Singh, G., & Chander, S. (1997). Civil engineering drawing (7th ed.). Standard Publisher.
Dyfyniad Arddull Chicago
Singh, Gurcharan, and Subhash Chander. Civil Engineering Drawing. 7th ed. New Delhi: Standard Publisher, 1997.
Dyfyniad MLA
Singh, Gurcharan, and Subhash Chander. Civil Engineering Drawing. 7th ed. Standard Publisher, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.