Gambetta and the foundation of the third republic,

"Bibliographical note": p. 258-260.

The development of modern Europe : an introduction to the study of current history /

"References" at end of chapters.

The Republic of Plato,

"Third edition."

Child labor and the republic.

"The papers in this volume are reprinted from the Annals of the American Academy of Political and Social Science, vol. XXIX, no. 1, January, 1907, in which they were originally published as the Proceedings of the third annual meeting of the National Child Labor Committee."