(2011). Harvard Business Review May-August 2011. HBR.
Lua i Stíl Chicago (17ú heag.)Harvard Business Review May-August 2011. HBR, 2011.
Lua MLA (8ú heag.)Harvard Business Review May-August 2011. HBR, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.