Smith, R. C. (1874). Smith's new grammar: English grammar on the productive system : a method of instruction recently adopted in Germany and Switzerland : designed for schools and academies (Rev. ed.). J.H. Butler & Co..
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSmith, Roswell Chamberlain. Smith's New Grammar: English Grammar on the Productive System : A Method of Instruction Recently Adopted in Germany and Switzerland : Designed for Schools and Academies. Rev. ed. Philadelphia: J.H. Butler & Co., 1874.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিSmith, Roswell Chamberlain. Smith's New Grammar: English Grammar on the Productive System : A Method of Instruction Recently Adopted in Germany and Switzerland : Designed for Schools and Academies. Rev. ed. J.H. Butler & Co., 1874.
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