APA (7 वां संस्करण) प्रशस्ति पत्र

ISI. (1984). IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. ISI.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

ISI. IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. NEW DELHI: ISI, 1984.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

ISI. IS: PURCHASERS DATA SHEET FOR COOLING TOWERS FOR PROCESS INDUSTRY IS : 8667-1977. ISI, 1984.