APA (7th ed.) Citation

Chesterton, G. K., & Collins, D. (1958). Lunacy and letters. Sheed and Ward.

Chicago Style (17th ed.) Citation

Chesterton, G. K., and Dorothy Collins. Lunacy and Letters. London ; New York: Sheed and Ward, 1958.

MLA (9th ed.) Citation

Chesterton, G. K., and Dorothy Collins. Lunacy and Letters. Sheed and Ward, 1958.