Cita APA (7a ed.)

Ison, G. (2021). Hardcastle's secret agent (First world edition.). Severn House.

Cita Chicago Style (17a ed.)

Ison, Graham. Hardcastle's Secret Agent. First world edition. Edinburgh: Severn House, 2021.

Cita MLA (8a ed.)

Ison, Graham. Hardcastle's Secret Agent. First world edition. Severn House, 2021.

Precaución: Estas citas no son 100% exactas.