Shenkman, M. M. (1998). The beneficiary workbook. John Wiley.
Chicago Style aipamenaShenkman, Martin M. The Beneficiary Workbook. New York: John Wiley, 1998.
MLA aipamenaShenkman, Martin M. The Beneficiary Workbook. John Wiley, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.