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..
Παραπομπή σε μορφή Chicago (17η εκδ.)Gill, Kay, και 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.
Παραπομπή σε μορφή MLA (9th εκδ.)Gill, Kay, και 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.