Vernon, U. (2015). Harriet the invincible. Dial Books for Young Readers, an imprint of Penguin Group (USA) Inc..
Cita Chicago Style (17a ed.)Vernon, Ursula. Harriet the Invincible. New York, New York: Dial Books for Young Readers, an imprint of Penguin Group (USA) Inc., 2015.
Cita MLA (8a ed.)Vernon, Ursula. Harriet the Invincible. Dial Books for Young Readers, an imprint of Penguin Group (USA) Inc., 2015.
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