APA aipamena

Bentley, T. J. (1980). Practical cost reduction. McGraw-Hill.

Chicago Style aipamena

Bentley, Trevor J. Practical Cost Reduction. London ; New York: McGraw-Hill, 1980.

MLA aipamena

Bentley, Trevor J. Practical Cost Reduction. McGraw-Hill, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.