Greenberg, K. L. (1994). Paragraphs and essays. HarperCollins College Publishers.
Lua i Stíl Chicago (17ú heag.)Greenberg, Karen L. Paragraphs and Essays. New York: HarperCollins College Publishers, 1994.
Lua MLA (8ú heag.)Greenberg, Karen L. Paragraphs and Essays. HarperCollins College Publishers, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.