Gill, K., & Smith, D. L. (1986). International research centers directory 1986-1987: A World Guide to government, university, independent nonprofit, and commerical research and development centers, institutes, laboratories, bureaus, test facilities, experinent stations, and data collection and analysis centeers, as well as foundations, councils, and other organizations which support research (3rd ed.). Gale Research Co..
Chicago Style (17. basım) AtıfGill, Kay, ve Darren L. Smith. International Research Centers Directory 1986-1987: A World Guide to Government, University, Independent Nonprofit, and Commerical Research and Development Centers, Institutes, Laboratories, Bureaus, Test Facilities, Experinent Stations, and Data Collection and Analysis Centeers, as Well as Foundations, Councils, and Other Organizations Which Support Research. 3rd ed. Detroit, Mich.: Gale Research Co., 1986.
MLA (9th ed.) AtıfGill, Kay, ve Darren L. Smith. International Research Centers Directory 1986-1987: A World Guide to Government, University, Independent Nonprofit, and Commerical Research and Development Centers, Institutes, Laboratories, Bureaus, Test Facilities, Experinent Stations, and Data Collection and Analysis Centeers, as Well as Foundations, Councils, and Other Organizations Which Support Research. 3rd ed. Gale Research Co., 1986.