Gaya APA

Leroy, P, S. (1980). Letters from my friend Teilhard de Chardin (1948-1955) including letters written during his final Years in America, Collected and introd.by Pierre Leroy. . New York dsl: Paulist Press.

Gaya MLA

Leroy, Pierre,, S.J.. "Letters from my friend Teilhard de Chardin (1948-1955) including letters written during his final Years in America, Collected and introd.by Pierre Leroy. ". New York dsl: Paulist Press, 1980. Buku.