Cita APA (7th ed.)

Philippine Chamber of Industries. Customs Group. (1971). Detailed summary of importations, Port of Manila. s.n.].

Cita Chicago (17th ed.)

Philippine Chamber of Industries. Customs Group. Detailed Summary of Importations, Port of Manila. [Manila: s.n.], 1971.

Cita MLA (9th ed.)

Philippine Chamber of Industries. Customs Group. Detailed Summary of Importations, Port of Manila. s.n.], 1971.