Exporters' register: Philippines, 1980-1981. Ministry of Trade.
Cita Chicago (17th ed.)Exporters' Register: Philippines, 1980-1981. Manila: Ministry of Trade.
Cita MLA (9th ed.)Exporters' Register: Philippines, 1980-1981. Ministry of Trade.
Atenció: Aquestes cites poden no estar 100% correctes.