Wright, J. (2006). Why is that so funny?: A practical exploration of physical comedy. Nick Hern Books.
Lua i Stíl Chicago (17ú heag.)Wright, John. Why Is That so Funny?: A Practical Exploration of Physical Comedy. London: Nick Hern Books, 2006.
Lua MLA (9ú heag.)Wright, John. Why Is That so Funny?: A Practical Exploration of Physical Comedy. Nick Hern Books, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.