APA (7th ed.) Zitazioa
Karlgaard, R., Peters, T. R., & Christensen, C. M. (2014). The soft edge: Where great companies find lasting success (First edition.). Jossey-Bass.
Chicago Style (17th ed.) Zitazioa
Karlgaard, Richard, Thomas R. Peters, eta Clayton M. Christensen. The Soft Edge: Where Great Companies Find Lasting Success. First edition. San Francisco, California: Jossey-Bass, 2014.
MLA (9th ed.) Zitazioa
Karlgaard, Richard, et al. The Soft Edge: Where Great Companies Find Lasting Success. First edition. Jossey-Bass, 2014.
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