Nelson, S. M. (1980). Fours for violins: Quartets in easy keys for violin groups to play (Partitur + Stimmen.). Boosey & Hawkes.
Chicagoスタイル(17版)引用形式Nelson, Sheila M. Fours for Violins: Quartets in Easy Keys for Violin Groups to Play. Partitur + Stimmen. London: Boosey & Hawkes, 1980.
MLA(8版)引用形式Nelson, Sheila M. Fours for Violins: Quartets in Easy Keys for Violin Groups to Play. Partitur + Stimmen. Boosey & Hawkes, 1980.
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