Higgins, L. (1978). Cost reduction from A to Z. McGraw Hill.
Chicago Style aipamenaHiggins, L. Cost Reduction from A to Z. New Delhi: McGraw Hill, 1978.
MLA aipamenaHiggins, L. Cost Reduction from A to Z. McGraw Hill, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.