Coover, S. L. (1966). A first course in drawing and blueprint reading (3rd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Coover, Shriver L. A First Course in Drawing and Blueprint Reading. 3rd ed. New York: McGraw-Hill, 1966.
Lua MLA (9ú heag.)Coover, Shriver L. A First Course in Drawing and Blueprint Reading. 3rd ed. McGraw-Hill, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.