Cowper, W. (1926). Selected letters. J. M. Dent.
Lua i Stíl Chicago (17ú heag.)Cowper, William. Selected Letters. London: J. M. Dent, 1926.
Lua MLA (9ú heag.)Cowper, William. Selected Letters. J. M. Dent, 1926.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.