Sanchez, S. (1999). Ooopppsss! sa ONAPUP. IN Editorial [column]. Philippine Collegian.
Lua i Stíl Chicago (17ú heag.)Sanchez, Seymour. "Ooopppsss! Sa ONAPUP. IN Editorial [column]." Philippine Collegian 1999.
Lua MLA (9ú heag.)Sanchez, Seymour. "Ooopppsss! Sa ONAPUP. IN Editorial [column]." Philippine Collegian, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.