Business objectives. (1997). Business objectives: Student's book and work book with answer key. Đồng Nai: Nxb. Đồng Nai.
Chicago Style CitationBusiness objectives. Business Objectives: Student's Book and Work Book With Answer Key. Đồng Nai: Nxb. Đồng Nai, 1997.
Cita MLABusiness objectives. Business Objectives: Student's Book and Work Book With Answer Key. Đồng Nai: Nxb. Đồng Nai, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.