APA aipamena

DUCKWORTH, W. (1977). A guide Operational Research W.e Duckworth. Chapman And Hall.

Chicago Style aipamena

DUCKWORTH, W.E. A Guide Operational Research W.e Duckworth. Chapman And Hall, 1977.

MLA aipamena

DUCKWORTH, W.E. A Guide Operational Research W.e Duckworth. Chapman And Hall, 1977.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.