Lua APA (7ú heag.)
Howarth, S. (1995). The children's atlas of the 20th century. The Millbrook Press.
Lua i Stíl Chicago (17ú heag.)
Howarth, Sarah. The Children's Atlas of the 20th Century. Brookfield, CT: The Millbrook Press, 1995.
Lua MLA (9ú heag.)
Howarth, Sarah. The Children's Atlas of the 20th Century. The Millbrook Press, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.