SCHOFIELD, W. (1978). Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths.
Lua i Stíl Chicago (17ú heag.)SCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
Lua MLA (8ú heag.)SCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
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