(2015). Where's Walrus?: And Penguin? (First edition.). Scholastic Press.
Cita Chicago Style (17a ed.)Where's Walrus?: And Penguin? First edition. New York: Scholastic Press, 2015.
Cita MLA (8a ed.)Where's Walrus?: And Penguin? First edition. Scholastic Press, 2015.
Precaución: Estas citas no son 100% exactas.