Schofield, W. (1993). Engineering surveying: Theory and examination problems for students (4th ed.). Butterworth-Heinemann.
Chicago-referens (17:e uppl.)Schofield, W. Engineering Surveying: Theory and Examination Problems for Students. 4th ed. Oxford [England]: Butterworth-Heinemann, 1993.
MLA-referens (9:e uppl.)Schofield, W. Engineering Surveying: Theory and Examination Problems for Students. 4th ed. Butterworth-Heinemann, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.