Athayde, W. P., Elswick, R., Lombard, P. E. 1., & Crawford, D. B. (2013). Project management essentials: A quick and easy guide to the most important concepts and best practices for managing your projects right (Third edition.). West Chester, Pennsylvania: Maven House Press.

Athayde, William P.,, Ruth Elswick, Paul E. 1950- Lombard, and Deborah Bigelow Crawford. Project Management Essentials: A Quick and Easy Guide to the Most Important Concepts and Best Practices for Managing Your Projects Right. Third edition. West Chester, Pennsylvania: Maven House Press, 2013.

Athayde, William P.,, Ruth Elswick, Paul E. 1950- Lombard, and Deborah Bigelow Crawford. Project Management Essentials: A Quick and Easy Guide to the Most Important Concepts and Best Practices for Managing Your Projects Right. Third edition. West Chester, Pennsylvania: Maven House Press, 2013.