Gardner, H. The religious poetry of John Donne: Helen Gardner. John Donne : a collection of critical essays.(1962).
Lua i Stíl Chicago (17ú heag.)Gardner, Helen. "The Religious Poetry of John Donne: Helen Gardner." John Donne : A Collection of Critical Essays.(1962) .
Lua MLA (8ú heag.)Gardner, Helen. "The Religious Poetry of John Donne: Helen Gardner." John Donne : A Collection of Critical Essays.(1962), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.