Shapp, M., & Shapp, C. (1961). Let's find out what's in the sky. Franklin Watts.
Lua i Stíl Chicago (17ú heag.)Shapp, Martha, agus C. Shapp. Let's Find Out What's in the Sky. New York: Franklin Watts, 1961.
Lua MLA (9ú heag.)Shapp, Martha, agus C. Shapp. Let's Find Out What's in the Sky. Franklin Watts, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.