APA (7e ed.) Bronvermelding

Ludwig, E., Paul, E., & Paul, C. (1930). Lincoln. Lincoln History Society.

Chicago (17e ed.) Bronvermelding

Ludwig, Emil, Eden Paul, en Cedar Paul. Lincoln. New York: Lincoln History Society, 1930.

MLA (9e ed.) Bronvermelding

Ludwig, Emil, et al. Lincoln. Lincoln History Society, 1930.