Cita APA

Grenville, J. (2005). A History of the World. From the 20th to the 21st Century. London GB: Routledge.

Citación estilo Chicago

Grenville, J.A.S. A History of the World. From the 20th to the 21st Century. London GB: Routledge, 2005.

Cita MLA

Grenville, J.A.S. A History of the World. From the 20th to the 21st Century. London GB: Routledge, 2005.