Eugene Ehrlich. (1987). Schaum's outline of theory and problems of punctuation, capitalization, and spelling. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoEugene Ehrlich. Schaum's Outline of Theory and Problems of Punctuation, Capitalization, and Spelling. New York: McGraw-Hill, 1987.
Trích dẫn MLAEugene Ehrlich. Schaum's Outline of Theory and Problems of Punctuation, Capitalization, and Spelling. New York: McGraw-Hill, 1987.
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