Lowth, R., & Freimarck, V. (1969). [Lectures ..., 1]: Introd. by Vincent Freimarck. Olms.
Lua i Stíl Chicago (17ú heag.)Lowth, Robert, agus Vincent Freimarck. [Lectures ..., 1]: Introd. by Vincent Freimarck. Hildesheim: Olms, 1969.
Lua MLA (8ú heag.)Lowth, Robert, agus Vincent Freimarck. [Lectures ..., 1]: Introd. by Vincent Freimarck. Olms, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.