Cita APA (7a ed.)

Fletcher, J., & Spuler, B. (1980). Rulers and governments of the world (Repr.). Bowker.

Cita Chicago Style (17a ed.)

Fletcher, John, y Bertold Spuler. Rulers and Governments of the World. Repr. London ; New York: Bowker, 1980.

Cita MLA (9a ed.)

Fletcher, John, y Bertold Spuler. Rulers and Governments of the World. Repr. Bowker, 1980.