Cita APA (7a ed.)

Richards, J. (2013). Doctor Who 50: The essential guide. BBC Children's Books.

Cita Chicago Style (17a ed.)

Richards, Justin. Doctor Who 50: The Essential Guide. London: BBC Children's Books, 2013.

Cita MLA (8a ed.)

Richards, Justin. Doctor Who 50: The Essential Guide. BBC Children's Books, 2013.

Precaución: Estas citas no son 100% exactas.