Lua APA (7ú heag.)

Ople, B. F. (1997). Why the attempt to change the charter is doomed. IN Horizons [column]. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

Ople, Blas F. "Why the Attempt to Change the Charter Is Doomed. IN Horizons [column]." Manila Bulletin 1997.

Lua MLA (9ú heag.)

Ople, Blas F. "Why the Attempt to Change the Charter Is Doomed. IN Horizons [column]." Manila Bulletin, 1997.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.