Dyfyniad APA

Heller, E. D. (1971). Value management: Value engineering and cost reduction. Addison - Wesley.

Dyfyniad Arddull Chicago

Heller, Edward D. Value Management: Value Engineering and Cost Reduction. London: Addison - Wesley, 1971.

Dyfyniad MLA

Heller, Edward D. Value Management: Value Engineering and Cost Reduction. Addison - Wesley, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.