APA (7th ed.) Citation

Duening & Click. (2005). Essential of business process outsourcing. John Wiley & Sons, Inc.

Chicago Style (17th ed.) Citation

Duening and Click. Essential of Business Process Outsourcing. New Jersey: John Wiley & Sons, Inc, 2005.

MLA (8th ed.) Citation

Duening and Click. Essential of Business Process Outsourcing. John Wiley & Sons, Inc, 2005.

Warning: These citations may not always be 100% accurate.