Blake, W., & Keynes, G. S. (1968). The letters of William Blake. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)Blake, William, agus Geoffrey Sir Keynes. The Letters of William Blake. Cambridge, Mass: Harvard University Press, 1968.
Lua MLA (9ú heag.)Blake, William, agus Geoffrey Sir Keynes. The Letters of William Blake. Harvard University Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.