Poynton, S. (2017). Beyond certification. Routledge.
Lua i Stíl Chicago (17ú heag.)Poynton, Scott. Beyond Certification. London, [England] ; New York: Routledge, 2017.
Lua MLA (9ú heag.)Poynton, Scott. Beyond Certification. Routledge, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.