APA

Hall W. P., . (1951). The course of Europe since Waterloo. New York: Appleton-Century-Crofts.

Chicago

Hall Walter Phelps, . 1951. The course of Europe since Waterloo. New York: Appleton-Century-Crofts.

Harvard

Hall W. P., . (1951). The course of Europe since Waterloo. New York: Appleton-Century-Crofts.

MLA

Hall Walter Phelps, . The course of Europe since Waterloo. New York: Appleton-Century-Crofts. 1951.