Heldman, K. (2005). PMP: Project management professional study guide. Wiley Publishing Inc..
シカゴスタイル引用形Heldman, Kim. PMP: Project Management Professional Study Guide. New Jersey: Wiley Publishing Inc., 2005.
MLA引用形式Heldman, Kim. PMP: Project Management Professional Study Guide. Wiley Publishing Inc., 2005.
警告: この引用は必ずしも正確ではありません.