APA(7版)引用形式

Philippines (Republic). Bureau of Telecommunications. Telephone directory: Government telephone system. s.n.

Chicagoスタイル(17版)引用形式

Philippines (Republic). Bureau of Telecommunications. Telephone Directory: Government Telephone System. [Manila: s.n.

MLA(9版)引用形式

Philippines (Republic). Bureau of Telecommunications. Telephone Directory: Government Telephone System. s.n.

警告: この引用は必ずしも正確ではありません.