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