Gifford, H. (1977). Pasternak: A critical study. Univ. Pr..
Lua i Stíl Chicago (17ú heag.)Gifford, Henry. Pasternak: A Critical Study. Cambridge [u.a.]: Univ. Pr., 1977.
Lua MLA (8ú heag.)Gifford, Henry. Pasternak: A Critical Study. Univ. Pr., 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.