Ulbricht, H. (1970). Wayang purwa: Shadows of the past. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Ulbricht, H. Wayang Purwa: Shadows of the Past. Kuala Lumpur: Oxford University Press, 1970.
Lua MLA (8ú heag.)Ulbricht, H. Wayang Purwa: Shadows of the Past. Oxford University Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.