Shannon, W. H. (1986). The hidden ground of love: Letters of Thomas Merton.
Lua i Stíl Chicago (17ú heag.)Shannon, William Henry. The Hidden Ground of Love: Letters of Thomas Merton. 1986.
Lua MLA (8ú heag.)Shannon, William Henry. The Hidden Ground of Love: Letters of Thomas Merton. 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.