Lua APA (7ú heag.)

Heller, S., & Semper, H. (1908). The rivulet: From 12 selected studies for the pianoforte, op.45. B.F Wood Music.

Lua i Stíl Chicago (17ú heag.)

Heller, Stephen, agus Hans Semper. The Rivulet: From 12 Selected Studies for the Pianoforte, Op.45. Boston: B.F Wood Music, 1908.

Lua MLA (9ú heag.)

Heller, Stephen, agus Hans Semper. The Rivulet: From 12 Selected Studies for the Pianoforte, Op.45. B.F Wood Music, 1908.

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