Gordis, R. (1968). Koheleth - the Man and his World: A Study of Ecclesiastes (3. Aufl.). Schocken.
Lua i Stíl Chicago (17ú heag.)Gordis, Robert. Koheleth - the Man and His World: A Study of Ecclesiastes. 3. Aufl. New York: Schocken, 1968.
Lua MLA (8ú heag.)Gordis, Robert. Koheleth - the Man and His World: A Study of Ecclesiastes. 3. Aufl. Schocken, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.