Whitaker, S. (2016). Pass the PMP® Exam: Tools, Tips and Tricks to Succeed (2nd ed. 2016.). Apress : Imprint: Apress. https://doi.org/10.1007/978-1-4842-2074-0

Whitaker, Sean. Pass the PMP® Exam: Tools, Tips and Tricks to Succeed. 2nd ed. 2016. Berkeley, CA: Apress : Imprint: Apress, 2016. https://doi.org/10.1007/978-1-4842-2074-0.

Whitaker, Sean. Pass the PMP® Exam: Tools, Tips and Tricks to Succeed. 2nd ed. 2016. Apress : Imprint: Apress, 2016. https://doi.org/10.1007/978-1-4842-2074-0.