APA (7e ed.) Bronvermelding
Smith G Chrystal. (1976). Estimating for building and civil engineering works (6 th ed.). Newnes - Butter Worth.
Chicago (17e ed.) Bronvermelding
Smith G Chrystal. Estimating for Building and Civil Engineering Works. 6 th ed. London: Newnes - Butter Worth, 1976.
MLA (9e ed.) Bronvermelding
Smith G Chrystal. Estimating for Building and Civil Engineering Works. 6 th ed. Newnes - Butter Worth, 1976.
Let op: Deze citaties zijn niet altijd 100% accuraat.