APA (7th ed.) Citation
Ogundipe P. A. & Tregidgo P. S. (1974). Practical English: A comprehensive secondary course. Book four. Longman.
Chicago Style (17th ed.) Citation
Ogundipe P. A. and Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Four. England: Longman, 1974.
MLA (9th ed.) Citation
Ogundipe P. A. and Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Four. Longman, 1974.
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