Battelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. (1961). Specialized science information services in the United States: A directory of selected specialized information services in the physical and biological sciences. National Science Foundation, Office of Science Information Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBattelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. Specialized Science Information Services in the United States: A Directory of Selected Specialized Information Services in the Physical and Biological Sciences. Washington: National Science Foundation, Office of Science Information Service, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBattelle Memorial Institute, Columbus, Ohio. Dept. of Economics and Information Research. Specialized Science Information Services in the United States: A Directory of Selected Specialized Information Services in the Physical and Biological Sciences. National Science Foundation, Office of Science Information Service, 1961.