Angel, G. G. (2010). PMP certification: A beginner's guide. New York: McGraw-Hill.
シカゴスタイル引用形Angel, George G. PMP Certification: A Beginner's Guide. New York: McGraw-Hill, 2010.
MLA引用形式Angel, George G. PMP Certification: A Beginner's Guide. New York: McGraw-Hill, 2010.
警告: この引用は必ずしも正確ではありません.