Hayes, J. M., & Sicius, F. J. (1976). Oral history interview with John Hayes.
Lua i Stíl Chicago (17ú heag.)Hayes, John M., agus Francis J. Sicius. Oral History Interview with John Hayes. 1976.
Lua MLA (8ú heag.)Hayes, John M., agus Francis J. Sicius. Oral History Interview with John Hayes. 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.