Παραπομπή σε μορφή APA (7η εκδ.)

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).

Παραπομπή σε μορφή Chicago (17η εκδ.)

Graddy, K., και 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.

Παραπομπή σε μορφή MLA (9th εκδ.)

Graddy, K., και 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.