Peterson, P. (2004). Schlümpfe. Trödler.
Lua i Stíl Chicago (17ú heag.)Peterson, Peter. "Schlümpfe." Trödler 2004.
Lua MLA (8ú heag.)Peterson, Peter. "Schlümpfe." Trödler, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.