Cita APA (7a ed.)

O'Callaghan, D. B. (1990). An illustrated history of the USA. Longman.

Cita Chicago Style (17a ed.)

O'Callaghan, Dennis Brynley. An Illustrated History of the USA. Essex: Longman, 1990.

Cita MLA (8a ed.)

O'Callaghan, Dennis Brynley. An Illustrated History of the USA. Longman, 1990.