APA (7 वां संस्करण) प्रशस्ति पत्र

Clifford, L. (1975). National scientific and technical information coordinating organisations: A comparative survey. Institute for Industrial Research and Standards.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Clifford, Liam. National Scientific and Technical Information Coordinating Organisations: A Comparative Survey. [Dublin]: Institute for Industrial Research and Standards, 1975.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Clifford, Liam. National Scientific and Technical Information Coordinating Organisations: A Comparative Survey. Institute for Industrial Research and Standards, 1975.