(1969). Philippine mint postage stamps, with a biodata of the Philippines. [s.n.].
Chicagoスタイル(17版)引用形式Philippine Mint Postage Stamps, with a Biodata of the Philippines. [Manila: [s.n.], 1969.
MLA(9版)引用形式Philippine Mint Postage Stamps, with a Biodata of the Philippines. [s.n.], 1969.
警告: この引用は必ずしも正確ではありません.