APA (7th ed.) Citation

Ludwig, E., Paul, E., & Paul, C. (1930). Lincoln. Grosset.

Chicago Style (17th ed.) Citation

Ludwig, Emil, Eden Paul, and Cedar Paul. Lincoln. New York: Grosset, 1930.

MLA (9th ed.) Citation

Ludwig, Emil, et al. Lincoln. Grosset, 1930.

Warning: These citations may not always be 100% accurate.