Erickson, C. E., & Roeber, E. C. (1955). Organization and administration of guidance services (2d ed.). McGraw-Hill book company.
Chicago-viite (17. p.)Erickson, Clifford Eric, ja Edward C. Roeber. Organization and Administration of Guidance Services. 2d ed. New York: McGraw-Hill book company, 1955.
MLA-viite (9. p.)Erickson, Clifford Eric, ja Edward C. Roeber. Organization and Administration of Guidance Services. 2d ed. McGraw-Hill book company, 1955.
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