APA Citation

Usher, R. G. 1. (1916). The challenge of the future: A study in American foreign policy. Boston ; New York: Houghton Mifflin Co..

Chicago Style Citation

Usher, Roland G. 1880-1957. The Challenge of the Future: A Study in American Foreign Policy. Boston ; New York: Houghton Mifflin Co., 1916.

MLA Citation

Usher, Roland G. 1880-1957. The Challenge of the Future: A Study in American Foreign Policy. Boston ; New York: Houghton Mifflin Co., 1916.

Warning: These citations may not always be 100% accurate.