Smith, J., & Fitch, W. H. (1875). Historia filicum: An exposition of the nature, number and organography of ferns, and review of the principles upon which genera are founded, and the systems of classification of the principal authors, with a new general arrangement; characters of the genera; remarks on their relationship to one another; their species; reference to authors; geographical distribution; etc., etc. Macmillan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Smith, John, و W. H. Fitch. Historia Filicum: An Exposition of the Nature, Number and Organography of Ferns, and Review of the Principles upon Which Genera Are Founded, and the Systems of Classification of the Principal Authors, with a New General Arrangement; Characters of the Genera; Remarks on Their Relationship to One Another; Their Species; Reference to Authors; Geographical Distribution; Etc., Etc. London: Macmillan, 1875.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Smith, John, و W. H. Fitch. Historia Filicum: An Exposition of the Nature, Number and Organography of Ferns, and Review of the Principles upon Which Genera Are Founded, and the Systems of Classification of the Principal Authors, with a New General Arrangement; Characters of the Genera; Remarks on Their Relationship to One Another; Their Species; Reference to Authors; Geographical Distribution; Etc., Etc. Macmillan, 1875.