SpringerLink (Online service), Lionetti, T. M., Snyder, E. P., & Christner, R. W. (2011). A Practical Guide to Building Professional Competencies in School Psychology. Springer US : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Timothy M. Lionetti, Edward P. Snyder, και Ray W. Christner. A Practical Guide to Building Professional Competencies in School Psychology. Boston, MA: Springer US : Imprint: Springer, 2011.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. A Practical Guide to Building Professional Competencies in School Psychology. Springer US : Imprint: Springer, 2011.
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