Melissa Stewart. (2010). National Geographic Readers: Dolphins (Reprint.). National Geographic Children's Books.
Cita Chicago (17th ed.)Melissa Stewart. National Geographic Readers: Dolphins. Reprint. National Geographic Children's Books, 2010.
Cita MLA (9th ed.)Melissa Stewart. National Geographic Readers: Dolphins. Reprint. National Geographic Children's Books, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.