APA aipamena

Vrat, P. (1998). Productivity management: A system approach. Narosa.

Chicago Style aipamena

Vrat, Prem. Productivity Management: A System Approach. New Delhi: Narosa, 1998.

MLA aipamena

Vrat, Prem. Productivity Management: A System Approach. Narosa, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.