APA
Ayres R. U., Ayres L. W., . (1999). Accounting for resources, 2: The life cycle of materials. Cheltenham: Edward Elgar.
Chicago
Ayres Robert U, Ayres Leslie W, . 1999. Accounting for resources, 2: The life cycle of materials. Cheltenham: Edward Elgar.
Harvard
Ayres R. U., Ayres L. W., . (1999). Accounting for resources, 2: The life cycle of materials. Cheltenham: Edward Elgar.
MLA
Ayres Robert U, Ayres Leslie W, . Accounting for resources, 2: The life cycle of materials. Cheltenham: Edward Elgar. 1999.