European Association for Research and Development in Higher Education & Verreck, W. A. (1974). Methodological problems in research and development in higher education: Proceedings of the inaugural congress of the European Association for Research and Development in Higher Education, Rotterdam, December 3-5, 1973. Swets & Zeitlinger.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)European Association for Research and Development in Higher Education và W. A. Verreck. Methodological Problems in Research and Development in Higher Education: Proceedings of the Inaugural Congress of the European Association for Research and Development in Higher Education, Rotterdam, December 3-5, 1973. Amsterdam: Swets & Zeitlinger, 1974.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)European Association for Research and Development in Higher Education và W. A. Verreck. Methodological Problems in Research and Development in Higher Education: Proceedings of the Inaugural Congress of the European Association for Research and Development in Higher Education, Rotterdam, December 3-5, 1973. Swets & Zeitlinger, 1974.