Hobbs, F., & Doling, J. F. (1981). Planning for engineers and surveyors. Pergamon Press.
Chicago Style aipamenaHobbs, F.D, and J F. Doling. Planning for Engineers and Surveyors. Oxford: Pergamon Press, 1981.
MLA aipamenaHobbs, F.D, and J F. Doling. Planning for Engineers and Surveyors. Pergamon Press, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.