APA (7e ed.) Bronvermelding

ebrary, Inc, & Westney, R. E. (1997). The Engineer's cost handbook: Tools for managing project costs. M. Dekker.

Chicago (17e ed.) Bronvermelding

ebrary, Inc, en Richard E. Westney. The Engineer's Cost Handbook: Tools for Managing Project Costs. New York: M. Dekker, 1997.

MLA (9e ed.) Bronvermelding

ebrary, Inc, en Richard E. Westney. The Engineer's Cost Handbook: Tools for Managing Project Costs. M. Dekker, 1997.