Valino, A., & Gappi, R. (1994). VATu-VATo sa langit.. Philippine Collegian.
Lua i Stíl Chicago (17ú heag.)Valino, Alex, agus Richard Gappi. "VATu-VATo Sa Langit.." Philippine Collegian 1994.
Lua MLA (9ú heag.)Valino, Alex, agus Richard Gappi. "VATu-VATo Sa Langit.." Philippine Collegian, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.