«William Topaz McGonagall». McGonagall Online(en inglés). Consultado el 1 de septiembre de 2018. «William Topaz McGonagall, poet and tragedian of Dundee, has been widely hailed as the writer of the worst poetry in the English language.»
Campbell, James (21 de enero de 2006). «Bard of the Silv'ry Tay». The Guardian. Consultado el 1 de septiembre de 2018. «There are a few standard remarks that pursue the name of William McGonagall. He is ‚the world’s worst poet‘, a writer so bad he is good.»
