Echevarria, R. G. Colonial lyric: Roberto Gonzalez Echevarria. Discovery to modernism.(1996).
Lua i Stíl Chicago (17ú heag.)Echevarria, Roberto Gonzalez. "Colonial Lyric: Roberto Gonzalez Echevarria." Discovery to Modernism.(1996) .
Lua MLA (8ú heag.)Echevarria, Roberto Gonzalez. "Colonial Lyric: Roberto Gonzalez Echevarria." Discovery to Modernism.(1996), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.