Powers , R. (2018). The Overstory. Penguin.
Lua i Stíl Chicago (17ú heag.)Powers , Richard. The Overstory. UK: Penguin, 2018.
Lua MLA (9ú heag.)Powers , Richard. The Overstory. Penguin, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.