Gaya APA

Weil, S, [. (1971). The need for roots,prelude to a declaration of duties toward mankind, transl.by A.Willis, preface by T.S.Eliot, [repr.]. : L'enracinement. 1949. Cet.pertama terj.1952. . New York dsl: Harper.

Gaya MLA

Weil, Simone., [1909-1943].. "The need for roots,prelude to a declaration of duties toward mankind, transl.by A.Willis, preface by T.S.Eliot, [repr.]. : L'enracinement. 1949. Cet.pertama terj.1952. ". New York dsl: Harper, 1971. Buku.