Chesterton, G. K., & Sullivan, J. (1974). Greybeards at play, and other comic verse. Elek.
Lua i Stíl Chicago (17ú heag.)Chesterton, G. K., agus John Sullivan. Greybeards at Play, and Other Comic Verse. London: Elek, 1974.
Lua MLA (8ú heag.)Chesterton, G. K., agus John Sullivan. Greybeards at Play, and Other Comic Verse. Elek, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.