Cita APA (7th ed.)

Humphreys, G. C. (2011). Project management using earned value (Second Edition.). Humphreys & Associates, Inc.

Cita Chicago (17th ed.)

Humphreys, Gary C. Project Management Using Earned Value. Second Edition. Orange, California: Humphreys & Associates, Inc, 2011.

Cita MLA (9th ed.)

Humphreys, Gary C. Project Management Using Earned Value. Second Edition. Humphreys & Associates, Inc, 2011.