Citace podle APA (7th ed.)
Ellis, C. D. (2013). What it takes: Seven secrets of success from the world's great professional firms. John Wiley & Sons, Inc..
Citace podle Chicago (17th ed.)
Ellis, Charles D. What It Takes: Seven Secrets of Success from the World's Great Professional Firms. Hoboken, N.J.: John Wiley & Sons, Inc., 2013.
Citace podle MLA (9th ed.)
Ellis, Charles D. What It Takes: Seven Secrets of Success from the World's Great Professional Firms. John Wiley & Sons, Inc., 2013.
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