James Huneker (2015). “Iconoclasts: A Book of Dramatists: Ibsen, Strindberg, Becque, Hauptmann, Sudermann, Hervieu, Gorky, Duse and D'Annunzio, Maeterlinck and Bernard Shaw”, p.6, CHARLES SCRIBNER'S SONS
"Michael Ian Black on Parenting, Pop Culture and His Worst Christmas Present Ever". Interview with Sarah Thyre, www.huffingtonpost.com. March 16, 2012.