APA (7th ed.) Citation

Chesterton, G. K. (1936). As I was saying: A book of essays (2nd ed.). Methuen.

Chicago Style (17th ed.) Citation

Chesterton, G. K. As I Was Saying: A Book of Essays. 2nd ed. London: Methuen, 1936.

MLA (8th ed.) Citation

Chesterton, G. K. As I Was Saying: A Book of Essays. 2nd ed. Methuen, 1936.