Cita APA

Philippines (Republic) & Central Book Supply, Inc. (1971). Philippine tariff and customs laws (2nd ed.). [s.n.].

Citación estilo Chicago

Philippines (Republic) and Inc Central Book Supply. Philippine Tariff and Customs Laws. 2nd ed. Manila: [s.n.], 1971.

Cita MLA

Philippines (Republic) and Inc Central Book Supply. Philippine Tariff and Customs Laws. 2nd ed. [s.n.], 1971.