Hartley, B. (1992). Streamline English: An intensive English course for intemediate students (Teacher edition). London: Oxford University.
Trích dẫn kiểu ChicagoHartley, Bernard. Streamline English: An Intensive English Course for Intemediate Students (Teacher Edition). London: Oxford University, 1992.
Trích dẫn MLAHartley, Bernard. Streamline English: An Intensive English Course for Intemediate Students (Teacher Edition). London: Oxford University, 1992.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.