APA Edition Citation

Koestler, A., & Hardy, D. (1994). Darkness At Noon (1st.). Vintage.

Chicago Edition Citation

Koestler, Arthur, and Dephne Hardy. Darkness At Noon. 1st. Great Britain: Vintage, 1994.

MLA Edition Citation

Koestler, Arthur, and Dephne Hardy. Darkness At Noon. 1st. Vintage, 1994.