Angeles, E. Y. (1997). Distance learning. IN Educators speak [column]. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Angeles, Emmanuel Y. "Distance Learning. IN Educators Speak [column]." Manila Bulletin 1997.
Lua MLA (9ú heag.)Angeles, Emmanuel Y. "Distance Learning. IN Educators Speak [column]." Manila Bulletin, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.