Lua APA (7ú heag.)
Spence, W. P. (1991). Drafting: Technology and practice (3rd ed.). Glencoe/ Mcmillan/McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)
Spence, William P. Drafting: Technology and Practice. 3rd ed. California: Glencoe/ Mcmillan/McGraw-Hill, 1991.
Lua MLA (9ú heag.)
Spence, William P. Drafting: Technology and Practice. 3rd ed. Glencoe/ Mcmillan/McGraw-Hill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.