Cita APA (7th ed.)

Barraclough, G. (1955). History in a changing world. University of Oklahoma Press.

Cita Chicago (17th ed.)

Barraclough, Geoffrey. History in a Changing World. Norman: University of Oklahoma Press, 1955.

Cita MLA (8th ed.)

Barraclough, Geoffrey. History in a Changing World. University of Oklahoma Press, 1955.