Nicholas Sampson. (1997). English in focus; Level B. Tp. HCM: Nxb. Tp. HCM.
Trích dẫn kiểu ChicagoNicholas Sampson. English in Focus; Level B. Tp. HCM: Nxb. Tp. HCM, 1997.
MLA引文Nicholas Sampson. English in Focus; Level B. Tp. HCM: Nxb. Tp. HCM, 1997.
警告:这些引文格式不一定是100%准确.