Clotfelter, C. T., Ladd, H. F., & Vigdor, J. L. (2007). Teacher credentials and student achievement in high school: A cross-subject analysis with student fixed effects. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Clotfelter, Charles T., Helen F. Ladd, und Jacob L. Vigdor. Teacher Credentials and Student Achievement in High School: A Cross-subject Analysis with Student Fixed Effects. Cambridge, Mass: National Bureau of Economic Research, 2007.
MLA-Zitierstil (9. Ausg.)Clotfelter, Charles T., et al. Teacher Credentials and Student Achievement in High School: A Cross-subject Analysis with Student Fixed Effects. National Bureau of Economic Research, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.