FORSYTHE, W., & FORSYTHE, W. (1991). Digital Control W. Forsy the R.m Gooddall. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)FORSYTHE, W., agus W. FORSYTHE. Digital Control W. Forsy the R.m Gooddall. McGraw-Hill, 1991.
Lua MLA (8ú heag.)FORSYTHE, W., agus W. FORSYTHE. Digital Control W. Forsy the R.m Gooddall. McGraw-Hill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.