Παραπομπή APA

Castleden, R. (2009). Encounters that changed the world. Futura.

Παραπομπή Chicago Style

Castleden, Rodney. Encounters That Changed the World. London: Futura, 2009.

Παραπομπή MLA

Castleden, Rodney. Encounters That Changed the World. Futura, 2009.