Gray, C. F. L. (2014). Project Management (11th ed.). McGraw Hill Education.
芝加哥风格引文Gray, Clifford F; Larson. Project Management. 11th ed. New Delhi: McGraw Hill Education, 2014.
MLA引文Gray, Clifford F; Larson. Project Management. 11th ed. McGraw Hill Education, 2014.
警告：这些引文格式不一定是100％准确.