Παραπομπή APA

Hobbs, F., & Doling, J. F. (1981). Planning for engineers and surveyors. Pergamon Press.

Παραπομπή Chicago Style

Hobbs, F.D, και J F. Doling. Planning for Engineers and Surveyors. Oxford: Pergamon Press, 1981.

Παραπομπή MLA

Hobbs, F.D, και J F. Doling. Planning for Engineers and Surveyors. Pergamon Press, 1981.