Lua APA (7ú heag.)

Fein, R. J. (1979). Robert Lowell (2a. ed.). Twayne Publishers.

Lua i Stíl Chicago (17ú heag.)

Fein, Richard J. Robert Lowell. 2a. ed. Boston: Twayne Publishers, 1979.

Lua MLA (9ú heag.)

Fein, Richard J. Robert Lowell. 2a. ed. Twayne Publishers, 1979.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.