Babcock, D. L. (1991). Managing Engineering And Technology Daniel L. Babcock. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Babcock, Daniel L. Managing Engineering And Technology Daniel L. Babcock. Prentice Hall, 1991.
Lua MLA (8ú heag.)Babcock, Daniel L. Managing Engineering And Technology Daniel L. Babcock. Prentice Hall, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.