Steblin, R. K. (1981). Key characteristic in the 18th and early 19th centuries: A hist. aproach. Univ., Phil. Fak., Diss..
Chicago-viite (17. p.)Steblin, Ruth Katherine. Key Characteristic in the 18th and Early 19th Centuries: A Hist. Aproach. Illinois: Univ., Phil. Fak., Diss., 1981.
MLA-viite (8. p.)Steblin, Ruth Katherine. Key Characteristic in the 18th and Early 19th Centuries: A Hist. Aproach. Univ., Phil. Fak., Diss., 1981.
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