SCHOFIELD, W. (1978). Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths.
Chicago-referens (17:e uppl.)SCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
MLA-referens (8:e uppl.)SCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.