Law, S. H. (1906). Notes on the training of the voice.
Lua i Stíl Chicago (17ú heag.)Law, Samuel H. Notes on the Training of the Voice. 1906.
Lua MLA (9ú heag.)Law, Samuel H. Notes on the Training of the Voice. 1906.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
