APA (7th ed.) Citation

National Academy of Sciences (U.S.) & World Data Center A. (1961). Seventh 6-monthly catalogue of data in IGY World Data Center A. National Academy of Sciences, National Research Council.

Chicago Style (17th ed.) Citation

National Academy of Sciences (U.S.) and World Data Center A. Seventh 6-monthly Catalogue of Data in IGY World Data Center A. Washington, D.C.: National Academy of Sciences, National Research Council, 1961.

MLA (9th ed.) Citation

National Academy of Sciences (U.S.) and World Data Center A. Seventh 6-monthly Catalogue of Data in IGY World Data Center A. National Academy of Sciences, National Research Council, 1961.