Cita APA (7a ed.)

Berridge, V., & Edwards, G. (1981). Opium an the people: Opiate use in nineteenth-century England. Allen Lane : St Martińs Press.

Cita Chicago Style (17a ed.)

Berridge, Virginia, y Griffith Edwards. Opium an the People: Opiate Use in Nineteenth-century England. London ; New York: Allen Lane : St Martińs Press, 1981.

Cita MLA (9a ed.)

Berridge, Virginia, y Griffith Edwards. Opium an the People: Opiate Use in Nineteenth-century England. Allen Lane : St Martińs Press, 1981.