Zelnik, R. E. (1971). Labour and Society in Tsarist Russia: The factory workers of St. Peter-sburg:1855-1870. Standford U.P.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZelnik, Reginald E. Labour and Society in Tsarist Russia: The Factory Workers of St. Peter-sburg:1855-1870. Standford U.P, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZelnik, Reginald E. Labour and Society in Tsarist Russia: The Factory Workers of St. Peter-sburg:1855-1870. Standford U.P, 1971.
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