Richberg, J. C. "Incongruity of the Divorce Laws of the United States, a Legal Tangle." Publications of the Michigan Political Science Association, I, No. 4. Ann Arbor, 1895.
Richter, Helene. Marie Wollstonecraft. Vienna, 1897.
Riehl, W. H. Die Familie. Stuttgart, 1855; 11th ed., 1897.
Rhode Island. Registration Reports, 1853-1900. Providence, 1854-1902.
Robinson, W. C. "The Diagnostics of Divorce." Journal of Social Science (American Association), XIV, 136-51. Boston and New York, 1881.
Robÿns, Jules (compiler). "Numero dei divorzi e separazioni in Belgio, Orlanda, e Francia." Annali di Statistica, 2d series, XVII. Rome, 1881.
Rodenbeck, Rudolf. Die Ehe in besonderer Beziehung auf Ehescheidung, und Eheschliessung Geschiedener. Gotha, 1882.
Romanes, George J. "Mental Differences of Men and Women." Popular Science Monthly, XXXI, 383-401. New York, 1887. The same in Nineteenth Century, XXI, 654-72. London, 1887.
Rondelet, Antonin. La vie dans le mariage. Paris, 1885.