Citazione Stile APA (7a Edizione)
Kopčáková, J., & Vajdová, J. History of Customs Duties and its use in the Import of Goods.
Citazione stile Chigago Style (17a edizione)
Kopčáková, Janka, e Jana Vajdová. History of Customs Duties and Its Use in the Import of Goods.
Citatione MLA (9a ed.)
Kopčáková, Janka, e Jana Vajdová. History of Customs Duties and Its Use in the Import of Goods.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.