APA (7e ed.) Bronvermelding

HEITKAMP, J. H. Process plant construction estimating standars: Siteworkk, piling, concrete. Volume I. Richardson Engineering Sevice.

Chicago (17e ed.) Bronvermelding

HEITKAMP, John H. Process Plant Construction Estimating Standars: Siteworkk, Piling, Concrete. Volume I. Richardson Engineering Sevice.

MLA (8e ed.) Bronvermelding

HEITKAMP, John H. Process Plant Construction Estimating Standars: Siteworkk, Piling, Concrete. Volume I. Richardson Engineering Sevice.

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