Nelson, S. M. (1980). Fours for violins: Quartets in easy keys for violin groups to play (Partitur + Stimmen.). Boosey & Hawkes.
Lua i Stíl Chicago (17ú heag.)Nelson, Sheila M. Fours for Violins: Quartets in Easy Keys for Violin Groups to Play. Partitur + Stimmen. London: Boosey & Hawkes, 1980.
Lua MLA (8ú heag.)Nelson, Sheila M. Fours for Violins: Quartets in Easy Keys for Violin Groups to Play. Partitur + Stimmen. Boosey & Hawkes, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.