Philatelic Center of the Philippines. Stamp journal. Philatelic Center of the Philippines.
芝加哥风格引文Philatelic Center of the Philippines. Stamp Journal. Manila: Philatelic Center of the Philippines.
MLA引文Philatelic Center of the Philippines. Stamp Journal. Philatelic Center of the Philippines.
警告：这些引文格式不一定是100％准确.