Gifford Griselda & Rayner, M. (1978). Cass the brave. Puffin Books.
Lua i Stíl Chicago (17ú heag.)Gifford Griselda agus Mary Rayner. Cass the Brave. New York: Puffin Books, 1978.
Lua MLA (9ú heag.)Gifford Griselda agus Mary Rayner. Cass the Brave. Puffin Books, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.