Solomon. The Science of Play. University Press of New England.
Lua i Stíl Chicago (17ú heag.)Solomon. The Science of Play. University Press of New England.
Lua MLA (9ú heag.)Solomon. The Science of Play. University Press of New England.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.