Cita APA (7th ed.)
Webb, A. (2003). Using earned value: A project manager's guide. Gower.
Cita Chicago (17th ed.)
Webb, Alan. Using Earned Value: A Project Manager's Guide. Aldershot, Hants, England ; Burlington, VT, USA: Gower, 2003.
Cita MLA (9th ed.)
Webb, Alan. Using Earned Value: A Project Manager's Guide. Gower, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.