Lua APA (7ú heag.)

Howard, B. C., & Higgins, R. (1939). On the trail with Lewis and Clark. Silver Burdett Co..

Lua i Stíl Chicago (17ú heag.)

Howard, Bonnie C., agus Ruth Higgins. On the Trail with Lewis and Clark. New York: Silver Burdett Co., 1939.

Lua MLA (8ú heag.)

Howard, Bonnie C., agus Ruth Higgins. On the Trail with Lewis and Clark. Silver Burdett Co., 1939.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.