CHANG RICHARD Y. (1998). CREATING HIGH-IMPACT TRAINING. WHEELER.
Chicago Style aipamenaCHANG RICHARD Y. CREATING HIGH-IMPACT TRAINING. NEW DELHI: WHEELER, 1998.
MLA aipamenaCHANG RICHARD Y. CREATING HIGH-IMPACT TRAINING. WHEELER, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.