Gaya APA

Lewis, C, [. (1977). The pilgrim's regress, an allegorical apology for Christianity, reason and romanticism, repr.ed. Cet.Pertama 1933. . Collins: Fount Paperbacks.

Gaya MLA

Lewis, C.S., [1898-1963].. "The pilgrim's regress, an allegorical apology for Christianity, reason and romanticism, repr.ed. Cet.Pertama 1933. ". Collins: Fount Paperbacks, 1977. Buku.