Cita APA (7th ed.)
ebrary, Inc, & Waller, B. (1990). 1830-1890. Unwin Hyman.
Cita Chicago (17th ed.)
ebrary, Inc, i Bruce Waller. 1830-1890. London ; Boston: Unwin Hyman, 1990.
Cita MLA (9th ed.)
ebrary, Inc, i Bruce Waller. 1830-1890. Unwin Hyman, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.