Cita APA (7th ed.)

Hertz, E. (1931). Abraham Lincoln: A new portrait. H. Liveright.

Cita Chicago (17th ed.)

Hertz, Emanuel. Abraham Lincoln: A New Portrait. New York: H. Liveright, 1931.

Cita MLA (9th ed.)

Hertz, Emanuel. Abraham Lincoln: A New Portrait. H. Liveright, 1931.