APA (7th ed.) Citation

Chesterton, G. K. (1903). Twelve types. A.L. Humphreys.

Chicago Style (17th ed.) Citation

Chesterton, G. K. Twelve Types. London: A.L. Humphreys, 1903.

MLA (8th ed.) Citation

Chesterton, G. K. Twelve Types. A.L. Humphreys, 1903.

Warning: These citations may not always be 100% accurate.