Cita APA (7a ed.)

Standring, T. J., & Clayton, M. (2013). Castiglione: Lost genius. Royal Collection Trust.

Cita Chicago Style (17a ed.)

Standring, Timothy J.., y Martin Clayton. Castiglione: Lost Genius. London: Royal Collection Trust, 2013.

Cita MLA (9a ed.)

Standring, Timothy J.., y Martin Clayton. Castiglione: Lost Genius. Royal Collection Trust, 2013.