Citazione Stile APA (7a Edizione)

Ross, M. (1980). Rulers and governments of the world (Repr. (twice).). Bowker.

Citazione stile Chigago Style (17a edizione)

Ross, Martha. Rulers and Governments of the World. Repr. (twice). London ; New York: Bowker, 1980.

Citatione MLA (9a ed.)

Ross, Martha. Rulers and Governments of the World. Repr. (twice). Bowker, 1980.