Jeffreys, S. (2019). Playwriting: Structure, character, how and what to write. Nick Hern Books.
Lua i Stíl Chicago (17ú heag.)Jeffreys, Stephen. Playwriting: Structure, Character, How and What to Write. London: Nick Hern Books, 2019.
Lua MLA (9ú heag.)Jeffreys, Stephen. Playwriting: Structure, Character, How and What to Write. Nick Hern Books, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.