Cite
MLA Citation
Kim Heldman. PMP Project Management Professional Exam Study Guide : 2021 Exam Update. Sybex, 2020. http://access.bl.uk/ark:/81055/vdc_100107567794.0x000001
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Kim Heldman. PMP Project Management Professional Exam Study Guide : 2021 Exam Update. Sybex, 2020. http://access.bl.uk/ark:/81055/vdc_100107567794.0x000001