Izvornik: Never Polka with a Porcupine. Never Polka with a Porcupine composed by Mark Burrows. Mark Burrows. Choir sheet music. 2-Part.
Prijevod: Nikad Polka s Dikobraza. Zbor note. Nikad Polka s Dikobraza skladao Mark Burrows. Za zborske. 2-dio. Shawnee Press. Horski. 8 stranica.