Allen, W. (1959). Living English Structure- Key to the exercise (14th.). Orient Longman.
Chicago Style (17. basım) AtıfAllen, W. Living English Structure- Key to the Exercise. 14th. Hyderabad: Orient Longman, 1959.
MLA (9th ed.) AtıfAllen, W. Living English Structure- Key to the Exercise. 14th. Orient Longman, 1959.
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