Priestley, J. . B. (1961). The thirty-first of June: A tale of true love enterprise and progress in the Arthurian and ad-atomic ages. Heinemann.
Lua i Stíl Chicago (17ú heag.)Priestley, John Boynton. The Thirty-first of June: A Tale of True Love Enterprise and Progress in the Arthurian and Ad-atomic Ages. London: Heinemann, 1961.
Lua MLA (9ú heag.)Priestley, John Boynton. The Thirty-first of June: A Tale of True Love Enterprise and Progress in the Arthurian and Ad-atomic Ages. Heinemann, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.