Gaya APA

Pierre, T, D, C. (1972). Letters to two friends 1926-1952, prologue by Prologue by R. d'Ouince, postscrip on Pierre Teilhard de Chardin as scientist, by Th. Dobzhansky, repr. Cet. I 1968 . London: Collins.

Gaya MLA

Pierre, Teilhard, De, Chardin,. "Letters to two friends 1926-1952, prologue by Prologue by R. d'Ouince, postscrip on Pierre Teilhard de Chardin as scientist, by Th. Dobzhansky, repr. Cet. I 1968 ". London: Collins, 1972. Buku.