Cita APA (7a ed.)

Lewis, C. S. (1954). A preface to Paradise lost (8th imp.). Oxford University Press.

Cita Chicago Style (17a ed.)

Lewis, C. S. A Preface to Paradise Lost. 8th imp. London [etc.]: Oxford University Press, 1954.

Cita MLA (9a ed.)

Lewis, C. S. A Preface to Paradise Lost. 8th imp. Oxford University Press, 1954.