Cita APA (7th ed.)

Joscelyn, A. (1940). Sign of the gun. Wright & Brown.

Cita Chicago (17th ed.)

Joscelyn, Archie. Sign of the Gun. London: Wright & Brown, 1940.

Cita MLA (8th ed.)

Joscelyn, Archie. Sign of the Gun. Wright & Brown, 1940.