Hicap, J. M. (2004). Roco tagged 'greenest' of presidential candidates. Manila Times.
Lua i Stíl Chicago (17ú heag.)Hicap, Jonathan M. "Roco Tagged 'Greenest' of Presidential Candidates." Manila Times 2004.
Lua MLA (9ú heag.)Hicap, Jonathan M. "Roco Tagged 'Greenest' of Presidential Candidates." Manila Times, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.