APA (7th ed.) Citation

Lewis, C. S. (1961). A preface to Paradise lost. Oxford University Press; AITBS.

Chicago Style (17th ed.) Citation

Lewis, C. S. A Preface to Paradise Lost. London ; New York; New Delhi: Oxford University Press; AITBS, 1961.

MLA (8th ed.) Citation

Lewis, C. S. A Preface to Paradise Lost. Oxford University Press; AITBS, 1961.