Hobbs, M., & Keddle, J. S. (2006). Commerce: Student's book. New York: Oxford University Press.
Trích dẫn kiểu ChicagoHobbs, Martyn, và Julia Starr Keddle. Commerce: Student's Book. New York: Oxford University Press, 2006.
Deismireacht MLAHobbs, Martyn, và Julia Starr Keddle. Commerce: Student's Book. New York: Oxford University Press, 2006.
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