APA

Ferrero G., . (1942). The principles of power: the great political crises of history. New York: Putnam.

Chicago

Ferrero Guglielmo, . 1942. The principles of power: the great political crises of history. New York: Putnam.

Harvard

Ferrero G., . (1942). The principles of power: the great political crises of history. New York: Putnam.

MLA

Ferrero Guglielmo, . The principles of power: the great political crises of history. New York: Putnam. 1942.