Citazione Stile APA (7a Edizione)

Figueiredo, Y. (2012). “The Defining Issues of the Twenty-First Century.”.

Citazione stile Chigago Style (17a edizione)

Figueiredo, Yves. “The Defining Issues of the Twenty-First Century.”. 2012.

Citatione MLA (8a ed.)

Figueiredo, Yves. “The Defining Issues of the Twenty-First Century.”. 2012.