APA (7th ed.) Citation

Ople, B. F. (2002). The invisible army. IN Horizons [column]: Strategic concepts. Manila Bulletin.

Chicago Style (17th ed.) Citation

Ople, Blas F. "The Invisible Army. IN Horizons [column]: Strategic Concepts." Manila Bulletin 2002.

MLA (9th ed.) Citation

Ople, Blas F. "The Invisible Army. IN Horizons [column]: Strategic Concepts." Manila Bulletin, 2002.