APA-viite (7. p.)

LEWIS, C. (1942). Preface to paradise lost. O.U.P..

Chicago-viite (17. p.)

LEWIS, C.S. Preface to Paradise Lost. London: O.U.P., 1942.

MLA-viite (9. p.)

LEWIS, C.S. Preface to Paradise Lost. O.U.P., 1942.