توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Darwin, C. (1958). The Origin of species: By means of natural selection or the preservation of favoured races in the struggle for life. New American Library.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Darwin, Charles. The Origin of Species: By Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. New York: New American Library, 1958.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Darwin, Charles. The Origin of Species: By Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. New American Library, 1958.