Cumming, C., & Vance, S. (2007). A spy by nature. Tantor Audio.
Cita Chicago Style (17a ed.)Cumming, Charles, y Simon Vance. A Spy by Nature. [Old Saybrook, Conn]: Tantor Audio, 2007.
Cita MLA (8a ed.)Cumming, Charles, y Simon Vance. A Spy by Nature. Tantor Audio, 2007.
Precaución: Estas citas no son 100% exactas.