Hartley, B. (1992). Streamline English: An intensive English course for intemediate students (Teacher edition). London: Oxford University.
استشهاد بنمط شيكاغوHartley, Bernard. Streamline English: An Intensive English Course for Intemediate Students (Teacher Edition). London: Oxford University, 1992.
MLA استشهادHartley, Bernard. Streamline English: An Intensive English Course for Intemediate Students (Teacher Edition). London: Oxford University, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.