Lua APA (7ú heag.)
Singh, G., & Chander, S. (1997). Civil engineering drawing (7th ed.). Standard Publisher.
Lua i Stíl Chicago (17ú heag.)
Singh, Gurcharan, agus Subhash Chander. Civil Engineering Drawing. 7th ed. New Delhi: Standard Publisher, 1997.
Lua MLA (9ú heag.)
Singh, Gurcharan, agus Subhash Chander. Civil Engineering Drawing. 7th ed. Standard Publisher, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.