APA (7e ed.) Bronvermelding

(2001). ENR [Engineering News Record]The TOP 400 Contractors Sourcebook 2001. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

ENR [Engineering News Record]The TOP 400 Contractors Sourcebook 2001. McGraw-Hill, 2001.

MLA (8e ed.) Bronvermelding

ENR [Engineering News Record]The TOP 400 Contractors Sourcebook 2001. McGraw-Hill, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.