FELD, J. (1997). Construction Failure. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)FELD, Jacob. Construction Failure. John Wiley & Sons, 1997.
Lua MLA (8ú heag.)FELD, Jacob. Construction Failure. John Wiley & Sons, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.