Buttrick, R. (1997). The project workout: A tool kit for reaping the rewards from all your business projects. Pitman.
Dyfyniad Arddull ChicagoButtrick, Robert. The Project Workout: A Tool Kit for Reaping the Rewards from All Your Business Projects. London: Pitman, 1997.
Dyfyniad MLAButtrick, Robert. The Project Workout: A Tool Kit for Reaping the Rewards from All Your Business Projects. Pitman, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.