APA

Foucauld C. d., . (1938). Lettres a Henry de Castries. Paris: B. Grasset.

Chicago

Foucauld Charles de, . 1938. Lettres a Henry de Castries. Paris: B. Grasset.

Harvard

Foucauld C. d., . (1938). Lettres a Henry de Castries. Paris: B. Grasset.

MLA

Foucauld Charles de, . Lettres a Henry de Castries. Paris: B. Grasset. 1938.