Gray, C. F. L. (2014). Project Management (11th ed.). McGraw Hill Education.
Chicago-čujuhus (17. p.)Gray, Clifford F; Larson. Project Management. 11th ed. New Delhi: McGraw Hill Education, 2014.
MLA-čujuhus (9. p.)Gray, Clifford F; Larson. Project Management. 11th ed. McGraw Hill Education, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.