Ubel PA. (2009). Free market Madness. Harvard Bus. School Pub.
Lua i Stíl Chicago (17ú heag.)Ubel PA. Free Market Madness. Boston: Harvard Bus. School Pub, 2009.
Lua MLA (9ú heag.)Ubel PA. Free Market Madness. Harvard Bus. School Pub, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.