Cita APA (7a ed.)

Spaemann, R., & O'Donovan, O. (2006). Persons: The difference between "Someone" and "Something". Oxford University Press.

Cita Chicago Style (17a ed.)

Spaemann, Robert, y Oliver O'Donovan. Persons: The Difference Between "Someone" and "Something". Oxford: Oxford University Press, 2006.

Cita MLA (9a ed.)

Spaemann, Robert, y Oliver O'Donovan. Persons: The Difference Between "Someone" and "Something". Oxford University Press, 2006.