Smith, R. C. (1850). English grammar on the productive system: A method of instruction recently adopted in Germany and Switzerland : designed for schools and academies. W.T. Truman.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Smith, Roswell Chamberlain. English Grammar on the Productive System: A Method of Instruction Recently Adopted in Germany and Switzerland : Designed for Schools and Academies. Cincinnati: W.T. Truman, 1850.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Smith, Roswell Chamberlain. English Grammar on the Productive System: A Method of Instruction Recently Adopted in Germany and Switzerland : Designed for Schools and Academies. W.T. Truman, 1850.
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