Não informado. (1973). International Journal of Fracture. Sijthoff & Noorahoff.
Lua i Stíl Chicago (17ú heag.)Não informado. International Journal of Fracture. Alphen Aan Den Rijn, Holanda: Sijthoff & Noorahoff, 1973.
Lua MLA (8ú heag.)Não informado. International Journal of Fracture. Sijthoff & Noorahoff, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.