Takahashi, Yasunari; Ikegami, Yoshihiko (1991). "The Ghost Trio: Beckett, Yeats, and Noh". The Empire of Signs: Semiotic Essays on Japanese Culture. Foundations of Semiotics. 8: 257–267. doi:10.1075/fos.8.12tak. ISBN978-90-272-3278-6.{{cite journal}}: CS1 maint: periodical has ISBN (link)