APA (7th ed.) Citation

Roosevelt, T. (1911). The strenuous life: Essays and addresses. The Century co..

Chicago Style (17th ed.) Citation

Roosevelt, Theodore. The Strenuous Life: Essays and Addresses. New York: The Century co., 1911.

MLA (9th ed.) Citation

Roosevelt, Theodore. The Strenuous Life: Essays and Addresses. The Century co., 1911.