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..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Smith, 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Smith, 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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.