Cita APA (7a ed.)

Morris, R. B., & Irwin, G. W. (1970). An encyclopaedia of the modern world: A concise reference history from 1760 to the present. Weidenfeld & Nicolson.

Cita Chicago Style (17a ed.)

Morris, Richard B., y Graham W. Irwin. An Encyclopaedia of the Modern World: A Concise Reference History from 1760 to the Present. London: Weidenfeld & Nicolson, 1970.

Cita MLA (8a ed.)

Morris, Richard B., y Graham W. Irwin. An Encyclopaedia of the Modern World: A Concise Reference History from 1760 to the Present. Weidenfeld & Nicolson, 1970.