APA (7th ed.) Citation

Paul, C., & John, G. (2022). Letters to Gwen John. Jonathan Cape.

Chicago Style (17th ed.) Citation

Paul, Celia, and Gwen John. Letters to Gwen John. London: Jonathan Cape, 2022.

MLA (9th ed.) Citation

Paul, Celia, and Gwen John. Letters to Gwen John. Jonathan Cape, 2022.