Hubbard, B. R. (1935). Cradle of the storms. Dodd, Mead & company.
Lua i Stíl Chicago (17ú heag.)Hubbard, Bernard Rosecrans. Cradle of the Storms. New York: Dodd, Mead & company, 1935.
Lua MLA (8ú heag.)Hubbard, Bernard Rosecrans. Cradle of the Storms. Dodd, Mead & company, 1935.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.