Chicago: W. Perrett and G.B. Jeffery, trans., "The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity," The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity in The Principle of Relativity: a Collection of Original Memoirs on the Special and General Theory of Relativity, ed. A. Sommerfeld (New York: Dodd, Mead and Company, 1923), ii–vi. Original Sources, accessed April 25, 2025, http://originalsources.com/Document.aspx?DocID=6WTG6FMTH8M7SS1.
MLA: . "The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity." The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity, translted by W. Perrett and G.B. Jeffery, in The Principle of Relativity: a Collection of Original Memoirs on the Special and General Theory of Relativity, edited by A. Sommerfeld, New York, Dodd, Mead and Company, 1923, pp. ii–vi. Original Sources. 25 Apr. 2025. http://originalsources.com/Document.aspx?DocID=6WTG6FMTH8M7SS1.
Harvard: (trans.), 'The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity' in The Principle of Relativity: A Collection of Original Memoirs on the Special and General Theory of Relativity. cited in 1923, The Principle of Relativity: a Collection of Original Memoirs on the Special and General Theory of Relativity, ed. , Dodd, Mead and Company, New York, pp.ii–vi. Original Sources, retrieved 25 April 2025, from http://originalsources.com/Document.aspx?DocID=6WTG6FMTH8M7SS1.