Keeves, J. P. (1990). Educational research methodology, and measurement: An international handbook. Pergamon Press.
Chicago-referens (17:e uppl.)Keeves, J. P. Educational Research Methodology, and Measurement: An International Handbook. New York, Estados Unidos: Pergamon Press, 1990.
MLA-referens (9:e uppl.)Keeves, J. P. Educational Research Methodology, and Measurement: An International Handbook. Pergamon Press, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.