Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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