Buttrick, R. (2000). The project workout: Electronic resource (2nd ed.). Financial Times/Prentice Hall.
Cita Chicago (17th ed.)Buttrick, Robert. The Project Workout: Electronic Resource. 2nd ed. London: Financial Times/Prentice Hall, 2000.
Cita MLA (8th ed.)Buttrick, Robert. The Project Workout: Electronic Resource. 2nd ed. Financial Times/Prentice Hall, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.