Carlsen, G. R., & Carlsen, R. C. (1979). Encounters: Themes in literature (3rd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Carlsen, G. Robert, agus Ruth Christoffer Carlsen. Encounters: Themes in Literature. 3rd ed. New York: McGraw-Hill, 1979.
Lua MLA (9ú heag.)Carlsen, G. Robert, agus Ruth Christoffer Carlsen. Encounters: Themes in Literature. 3rd ed. McGraw-Hill, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.