Hamel, G. (1994). Competing for the future. Harvard Business School Press.
Chicago Style aipamenaHamel, Gary. Competing for the Future. Boston: Harvard Business School Press, 1994.
MLA aipamenaHamel, Gary. Competing for the Future. Harvard Business School Press, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.