Cita APA (7a ed.)

Humphries, J. (2012). Spying for Hitler: The Welsh double-cross. University of Wales Press.

Cita Chicago Style (17a ed.)

Humphries, John. Spying for Hitler: The Welsh Double-cross. Cardiff: University of Wales Press, 2012.

Cita MLA (8a ed.)

Humphries, John. Spying for Hitler: The Welsh Double-cross. University of Wales Press, 2012.