Cita APA (7th ed.)
EUA. United States Customs Service. Importing Into the United States: A Guide for Commercial Importers. Books for Business.
Cita Chicago (17th ed.)
EUA. United States Customs Service. Importing Into the United States: A Guide for Commercial Importers. EUA: Books for Business.
Cita MLA (9th ed.)
EUA. United States Customs Service. Importing Into the United States: A Guide for Commercial Importers. Books for Business.
Atenció: Aquestes cites poden no estar 100% correctes.