Graddy, K., & Stevens, M. (2003). The Impact of School Inputs on Student Performance: An Empirical Study of Private Schools in the United Kingdom. Department of Economics (University of Oxford).
Chicago-referens (17:e uppl.)Graddy, K., och M. Stevens. The Impact of School Inputs on Student Performance: An Empirical Study of Private Schools in the United Kingdom. Department of Economics (University of Oxford), 2003.
MLA-referens (9:e uppl.)Graddy, K., och M. Stevens. The Impact of School Inputs on Student Performance: An Empirical Study of Private Schools in the United Kingdom. Department of Economics (University of Oxford), 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.