(1976). Principles And Practices Of Heavy Construction / Ronald C. Smith. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Principles And Practices Of Heavy Construction / Ronald C. Smith. Prentice Hall, 1976.
Lua MLA (8ú heag.)Principles And Practices Of Heavy Construction / Ronald C. Smith. Prentice Hall, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.