Smith, D. E. (1977). Quantative Business Analysis. John Wiley.
Chicago Style aipamenaSmith, David Eugene. Quantative Business Analysis. SANTA BARBARA: John Wiley, 1977.
MLA aipamenaSmith, David Eugene. Quantative Business Analysis. John Wiley, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.