Carranza, C. C. (1999). Bureau of Customs: 21st century ship. Kabayan.
Chicago-viite (17. p.)Carranza, Christine C. "Bureau of Customs: 21st Century Ship." Kabayan 1999.
MLA-viite (9. p.)Carranza, Christine C. "Bureau of Customs: 21st Century Ship." Kabayan, 1999.
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