Isaac, S. (1971). Handbook in research and evaluation: A collection of principles, methods, and strategies useful in the planning, design, and evaluation of studies in education and the behavioral sciences. R. R. Knapp.
Chicago-referens (17:e uppl.)Isaac, Stephen. Handbook in Research and Evaluation: A Collection of Principles, Methods, and Strategies Useful in the Planning, Design, and Evaluation of Studies in Education and the Behavioral Sciences. San Diego, Calif: R. R. Knapp, 1971.
MLA-referens (9:e uppl.)Isaac, Stephen. Handbook in Research and Evaluation: A Collection of Principles, Methods, and Strategies Useful in the Planning, Design, and Evaluation of Studies in Education and the Behavioral Sciences. R. R. Knapp, 1971.
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