Cathrein, V., Laveleye, E. d., George, H., & Heinzle, J. U. (1889). The champions of agrarian socialism: A refutation of Emile de Laveleye and Henry George. P. Paul & Bro..

Cathrein, Victor, Emile de Laveleye, Henry George, and J. U. Heinzle. The Champions of Agrarian Socialism: A Refutation of Emile De Laveleye and Henry George. Buffalo [N.Y.]: P. Paul & Bro., 1889.

Cathrein, Victor, et al. The Champions of Agrarian Socialism: A Refutation of Emile De Laveleye and Henry George. P. Paul & Bro., 1889.