(2018). ¡Volcanes! (Volcanoes!) Cy Armour [electronic resource].
Cita Chicago (17th ed.)¡Volcanes! (Volcanoes!) Cy Armour [electronic Resource]. 2018.
Cita MLA (9th ed.)¡Volcanes! (Volcanoes!) Cy Armour [electronic Resource]. 2018.
Atenció: Aquestes cites poden no estar 100% correctes.