Gay, L. R. (1987). Educational research: Competencies for analysis and application (3rd ed.). Merrill Pub. Co..
Chicago-Zitierstil (17. Ausg.)Gay, L. R. Educational Research: Competencies for Analysis and Application. 3rd ed. Columbus: Merrill Pub. Co., 1987.
MLA-Zitierstil (8. Ausg.)Gay, L. R. Educational Research: Competencies for Analysis and Application. 3rd ed. Merrill Pub. Co., 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.