Maitland, I. (1999). Perfect PR. International Thomson Business Press.
Lua i Stíl Chicago (17ú heag.)Maitland, Iain. Perfect PR. London: International Thomson Business Press, 1999.
Lua MLA (9ú heag.)Maitland, Iain. Perfect PR. International Thomson Business Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.