Allen, W. S. (1974). Living english structure: Key to exercises. Longman.
Chicago Style (17th ed.) CitationAllen, W Stannard. Living English Structure: Key to Exercises. Longman, 1974.
MLA (8th ed.) CitationAllen, W Stannard. Living English Structure: Key to Exercises. Longman, 1974.
Warning: These citations may not always be 100% accurate.