KOBAYASHI IWAO. (1994). 20 KEYS TO WORKPLACE IMPROVEMENT. PRODUCTIVITY & QUALITY PUBLICATION.
Chicago Style aipamenaKOBAYASHI IWAO. 20 KEYS TO WORKPLACE IMPROVEMENT. MADRAS: PRODUCTIVITY & QUALITY PUBLICATION, 1994.
MLA aipamenaKOBAYASHI IWAO. 20 KEYS TO WORKPLACE IMPROVEMENT. PRODUCTIVITY & QUALITY PUBLICATION, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.