Lua APA (7ú heag.)

Duckworth, W. (2007). A creative approach to music fundamentals (9th ed.). Thomson/Schirmer.

Lua i Stíl Chicago (17ú heag.)

Duckworth, William. A Creative Approach to Music Fundamentals. 9th ed. Belmont, Calif: Thomson/Schirmer, 2007.

Lua MLA (9ú heag.)

Duckworth, William. A Creative Approach to Music Fundamentals. 9th ed. Thomson/Schirmer, 2007.

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