SCHOFIELD, W. (1978). Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSCHOFIELD, W. Engineering Surveying Theory And Examination Problems For Students W. Schofield. Newnes Buttrwoths, 1978.
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