Webster, C. (2003). The Lewis and Clark Expedition. Children's Press.
Lua i Stíl Chicago (17ú heag.)Webster, Christine. The Lewis and Clark Expedition. Children's Press, 2003.
Lua MLA (8ú heag.)Webster, Christine. The Lewis and Clark Expedition. Children's Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.