APA (7e ed.) Bronvermelding
Ostwald, P. F. (1974). Cost estimating for engineering and management. Prentice-Hall.
Chicago (17e ed.) Bronvermelding
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Englewood Cliffs, N.J.: Prentice-Hall, 1974.
MLA (9e ed.) Bronvermelding
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Prentice-Hall, 1974.
Let op: Deze citaties zijn niet altijd 100% accuraat.