(1962). Steel & coal. Fuel & Metallurgical Journals.
Lua i Stíl Chicago (17ú heag.)Steel & Coal. London: Fuel & Metallurgical Journals, 1962.
Lua MLA (8ú heag.)Steel & Coal. Fuel & Metallurgical Journals, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.