Erickson, C. E. (1947). Organization and administration of guidance services (1st edition.). McGraw-Hill book company, inc.
Chicago Style aipamenaErickson, Clifford E. Organization and Administration of Guidance Services. 1st edition. New York, New York: McGraw-Hill book company, inc, 1947.
MLA aipamenaErickson, Clifford E. Organization and Administration of Guidance Services. 1st edition. McGraw-Hill book company, inc, 1947.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.