APA Citation

Nguyễn Quốc Hùng. (1998). English in Focus Level B workbook. TPHCM.

Chicago Style Citation

Nguyễn Quốc Hùng. English in Focus Level B Workbook. TPHCM, 1998.

MLA Citation

Nguyễn Quốc Hùng. English in Focus Level B Workbook. TPHCM, 1998.

Warning: These citations may not always be 100% accurate.