Byrne, J., & Waugh, A. (1980). Zig Zag: An activity course for children. Reading Book Year 2. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Byrne, John, agus Anne Waugh. Zig Zag: An Activity Course for Children. Reading Book Year 2. Oxford: Oxford University Press, 1980.
Lua MLA (9ú heag.)Byrne, John, agus Anne Waugh. Zig Zag: An Activity Course for Children. Reading Book Year 2. Oxford University Press, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.