Ople, B. F. (2002). The invisible army. IN Horizons [column]: Strategic concepts. Manila Bulletin.
Chicago Style (17th ed.) CitationOple, Blas F. "The Invisible Army. IN Horizons [column]: Strategic Concepts." Manila Bulletin 2002.
ציטוט MLAOple, Blas F. "The Invisible Army. IN Horizons [column]: Strategic Concepts." Manila Bulletin, 2002.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.