APA-ийн эшлэл(7 дахь хэвлэлт)

Click, R. L., & Duening, T. N. (2005). Business process outsourcing: The competitive advantage. John Wiley & Sons.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Click, Rick L., ба Thomas N. Duening. Business Process Outsourcing: The Competitive Advantage. Hoboken, N.J.: John Wiley & Sons, 2005.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Click, Rick L., ба Thomas N. Duening. Business Process Outsourcing: The Competitive Advantage. John Wiley & Sons, 2005.