Isaac, S., & Michael, W. B. (1981). 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 (2nd ed.). EDITS Publishers.
Cytowanie według stylu Chicago (wyd. 17)Isaac, Stephen, i William Burton Michael. 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. 2nd ed. San Diego, Calif: EDITS Publishers, 1981.
Cytowanie według stylu MLA (wyd. 9)Isaac, Stephen, i William Burton Michael. 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. 2nd ed. EDITS Publishers, 1981.