Barner, B. (2007). Penguins, penguins, everywhere! Chronicle Books.
Cita Chicago Style (17a ed.)Barner, Bob. Penguins, Penguins, Everywhere! San Francisco, Calif.: Chronicle Books, 2007.
Cita MLA (8a ed.)Barner, Bob. Penguins, Penguins, Everywhere! Chronicle Books, 2007.
Precaución: Estas citas no son 100% exactas.