Παραπομπή APA

Buttrick, R. (2000). Project workout: A tool kit for reaping the rewards from all your business (2nd ed.). Pearson Education Ltd.

Παραπομπή Chicago Style

Buttrick, Robert. Project Workout: A Tool Kit for Reaping the Rewards from All Your Business. 2nd ed. London: Pearson Education Ltd, 2000.

Παραπομπή MLA

Buttrick, Robert. Project Workout: A Tool Kit for Reaping the Rewards from All Your Business. 2nd ed. Pearson Education Ltd, 2000.