APA-ийн эшлэл(7 дахь хэвлэлт)

Ellis, C. D. (2013). What it takes: Seven secrets of success from the world's great professional firms. John Wiley & Sons, Inc..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ellis, Charles D. What It Takes: Seven Secrets of Success from the World's Great Professional Firms. John Wiley & Sons, Inc., 2013.