APA (7th ed.) Citation

Lewis, C. S. (1988). The problem of pain (1st pub., 27 impr.). Collins.

Chicago Style (17th ed.) Citation

Lewis, C. S. The Problem of Pain. 1st pub., 27 impr. Glasgow: Collins, 1988.

MLA (9th ed.) Citation

Lewis, C. S. The Problem of Pain. 1st pub., 27 impr. Collins, 1988.