Citazione Stile APA (7a Edizione)

Spuler, B., Allen, C. G., Saunders, N., & Fletcher, J. (1980). Rulers and governments of the world (Repr. (twice).). Bowker.

Citazione stile Chigago Style (17a edizione)

Spuler, Bertold, Charles Geoffry Allen, Neil Saunders, e John Fletcher. Rulers and Governments of the World. Repr. (twice). London ; New York: Bowker, 1980.

Citatione MLA (9a ed.)

Spuler, Bertold, et al. Rulers and Governments of the World. Repr. (twice). Bowker, 1980.