McKnight, G. H., Haber, T. B., & Hatfield, W. W. (1939). A grammar of living English. American Book Co..
Dyfyniad Arddull ChicagoMcKnight, George Harley, Tom Burns Haber, and W. Wilbur Hatfield. A Grammar of Living English. New York, Cincinnati: American Book Co., 1939.
Dyfyniad MLAMcKnight, George Harley, et al. A Grammar of Living English. American Book Co., 1939.
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