APA (7th ed.) Citation

Chesterton, G. K. (1971). Come to think of it .. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Chesterton, G. K. Come to Think of It .. Freeport, N.Y.: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Chesterton, G. K. Come to Think of It .. Books for Libraries Press, 1971.