(1959). The book of popular science. Grolier Society.
Lua i Stíl Chicago (17ú heag.)The Book of Popular Science. New York: Grolier Society, 1959.
Lua MLA (9ú heag.)The Book of Popular Science. Grolier Society, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.