PARKINSON C NORTHCOTE. (1978). HOW TO GET TO THE TOP. MACMILLAN.
Chicago Style aipamenaPARKINSON C NORTHCOTE. HOW TO GET TO THE TOP. NEW DELHI: MACMILLAN, 1978.
MLA aipamenaPARKINSON C NORTHCOTE. HOW TO GET TO THE TOP. MACMILLAN, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.