MLA

2007-2008 Global Sales Perceptions Report: Is the Sales Force Delivering Business Value?. Development Dimensions International, Inc. (DDI), .

APA

2007-2008 Global Sales Perceptions Report: Is the Sales Force Delivering Business Value?. Development Dimensions International, Inc. (DDI).

Chicago

2007-2008 Global Sales Perceptions Report: Is the Sales Force Delivering Business Value?. : Development Dimensions International, Inc. (DDI).