Parazo, C. (1989). P5.6-B project completed - Estuar. Manila Bulletin.
Cita Chicago (17th ed.)Parazo, Chito. "P5.6-B Project Completed - Estuar." Manila Bulletin 1989.
Cita MLA (9th ed.)Parazo, Chito. "P5.6-B Project Completed - Estuar." Manila Bulletin, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.