Buchan, R. D., Fleming, F. W. E., & Grant, F. E. K. (2003). Estimating for builders and surveyors (2nd ed.). Butterworth Heinemann.
Chicago Style aipamenaBuchan, Ross D., F. W. Eric Fleming, and Fiona E. K. Grant. Estimating for Builders and Surveyors. 2nd ed. Oxford: Butterworth Heinemann, 2003.
MLA aipamenaBuchan, Ross D., et al. Estimating for Builders and Surveyors. 2nd ed. Butterworth Heinemann, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.