(1965). Work study. Sawell Publications.
Lua i Stíl Chicago (17ú heag.)Work Study. London: Sawell Publications, 1965.
Lua MLA (9ú heag.)Work Study. Sawell Publications, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.