Cita APA (7th ed.)

Smith, D. (1989). North and south: Britain's economic, social and political divide. Penguin.

Cita Chicago (17th ed.)

Smith, David. North and South: Britain's Economic, Social and Political Divide. London: Penguin, 1989.

Cita MLA (9th ed.)

Smith, David. North and South: Britain's Economic, Social and Political Divide. Penguin, 1989.