APA (7th ed.) Citation

Mommsen, W. J. (1980). Theories of imperialism (1st American ed.). Random House.

Chicago Style (17th ed.) Citation

Mommsen, Wolfgang J. Theories of Imperialism. 1st American ed. New York: Random House, 1980.

MLA (9th ed.) Citation

Mommsen, Wolfgang J. Theories of Imperialism. 1st American ed. Random House, 1980.