Gosh, P. (1992). Business policy (4th ed.). Saltonchand & Sons.
Chicago Style aipamenaGosh, P.K. Business Policy. 4th ed. New Delhi: Saltonchand & Sons, 1992.
MLA aipamenaGosh, P.K. Business Policy. 4th ed. Saltonchand & Sons, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.