Williams, S., & Fletcher, L. (2015). Live sound for guitar. Cengage Learning PTR.
Lua i Stíl Chicago (17ú heag.)Williams, Sandy, agus Luke Fletcher. Live Sound for Guitar. Boston, Massachusetts: Cengage Learning PTR, 2015.
Lua MLA (9ú heag.)Williams, Sandy, agus Luke Fletcher. Live Sound for Guitar. Cengage Learning PTR, 2015.
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