Cita APA (7a ed.)

Betts, T. (2014). Invincible. OBERON Books Ltd.

Cita Chicago Style (17a ed.)

Betts, Torben. Invincible. London: OBERON Books Ltd, 2014.

Cita MLA (8a ed.)

Betts, Torben. Invincible. OBERON Books Ltd, 2014.