Chopra, R. (1985). Office management (4th.). Himalaya.
Chicago Style aipamenaChopra, R. Office Management. 4th. Bombay: Himalaya, 1985.
MLA aipamenaChopra, R. Office Management. 4th. Himalaya, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.