Anna Claybourne. (2000). Read About Volcanoes. Copper Beech.
Cita Chicago (17th ed.)Anna Claybourne. Read About Volcanoes. Copper Beech, 2000.
Cita MLA (9th ed.)Anna Claybourne. Read About Volcanoes. Copper Beech, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.