Wagner, W., & Ostick, D. T. (2013). Exploring leadership for college students who want to make a difference: Student workbook (3rd ed.). Wiley.
Παραπομπή σε μορφή Chicago (17η εκδ.)Wagner, Wendy, και Daniel T. Ostick. Exploring Leadership for College Students Who Want to Make a Difference: Student Workbook. 3rd ed. New York: Wiley, 2013.
Παραπομπή σε μορφή MLA (9th εκδ.)Wagner, Wendy, και Daniel T. Ostick. Exploring Leadership for College Students Who Want to Make a Difference: Student Workbook. 3rd ed. Wiley, 2013.
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