Steblin, R. K. (1981). Key characteristic in the 18th and early 19th centuries: A hist. aproach. Univ., Phil. Fak., Diss..
Lua i Stíl Chicago (17ú heag.)Steblin, Ruth Katherine. Key Characteristic in the 18th and Early 19th Centuries: A Hist. Aproach. Illinois: Univ., Phil. Fak., Diss., 1981.
Lua MLA (8ú heag.)Steblin, Ruth Katherine. Key Characteristic in the 18th and Early 19th Centuries: A Hist. Aproach. Univ., Phil. Fak., Diss., 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.