VERNON-WORTZEL, H. (1991). Global Strategic Management: The Essentials. John Wiley & Sons.
Chicago Style aipamenaVERNON-WORTZEL, Heidi. Global Strategic Management: The Essentials. John Wiley & Sons, 1991.
MLA aipamenaVERNON-WORTZEL, Heidi. Global Strategic Management: The Essentials. John Wiley & Sons, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.