Knapp-Fisher, H. C. (1932). Outline of world history for boys and girls: With 81 illustrations. E.P. Dutton & Co..
Lua i Stíl Chicago (17ú heag.)Knapp-Fisher, H. C. Outline of World History for Boys and Girls: With 81 Illustrations. New York: E.P. Dutton & Co., 1932.
Lua MLA (8ú heag.)Knapp-Fisher, H. C. Outline of World History for Boys and Girls: With 81 Illustrations. E.P. Dutton & Co., 1932.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.