Philatelic Center of the Philippines. Stamp journal. Philatelic Center of the Philippines.
Cita Chicago (17th ed.)Philatelic Center of the Philippines. Stamp Journal. Manila: Philatelic Center of the Philippines.
Cita MLA (9th ed.)Philatelic Center of the Philippines. Stamp Journal. Philatelic Center of the Philippines.
Atenció: Aquestes cites poden no estar 100% correctes.