Cita APA

Ryan, D. (2014). The United States and Europe in the twentieth century. London: Routledge, Taylor & Francis Group.

Citación estilo Chicago

Ryan, David. The United States and Europe in the Twentieth Century. London: Routledge, Taylor & Francis Group, 2014.

Cita MLA

Ryan, David. The United States and Europe in the Twentieth Century. London: Routledge, Taylor & Francis Group, 2014.