ISI. (1984). IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. ISI.
Lua i Stíl Chicago (17ú heag.)ISI. IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. NEW DELHI: ISI, 1984.
Lua MLA (9ú heag.)ISI. IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. ISI, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.