Powers, B. (1992). Instructor excellence: Mastering the delivery of training. Jossey Bass.
Citazione stile Chigago Style (17a edizione)Powers, Bob. Instructor Excellence: Mastering the Delivery of Training. San Francisco: Jossey Bass, 1992.
Citatione MLA (9a ed.)Powers, Bob. Instructor Excellence: Mastering the Delivery of Training. Jossey Bass, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.