APA-referens (7:e uppl.)

Gray, C. F. L. (2014). Project Management (6th ed.). McGraw Hill Education.

Chicago-referens (17:e uppl.)

Gray, Clifford F.; Larson. Project Management. 6th ed. New Delhi: McGraw Hill Education, 2014.

MLA-referens (9:e uppl.)

Gray, Clifford F.; Larson. Project Management. 6th ed. McGraw Hill Education, 2014.