Dyfyniad APA
Ogundipe P. A. & Tregidgo P. S. (1972). Practical English: A comprehensive secondary course. Book three. Longman.
Dyfyniad Arddull Chicago
Ogundipe P. A. and Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Three. England: Longman, 1972.
Dyfyniad MLA
Ogundipe P. A. and Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Three. Longman, 1972.
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