United Kingdom. Department of Scientific and Industrial Research. (1935). Report for the year 1934-35. His Majestys Stationery Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Kingdom. Department of Scientific and Industrial Research. Report for the Year 1934-35. London: His Majestys Stationery Office, 1935.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Kingdom. Department of Scientific and Industrial Research. Report for the Year 1934-35. His Majestys Stationery Office, 1935.
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