Cita APA (7th ed.)

Dahl, M., & D'Antonio, S. (2010). Do penguins have puppies?: A book about animal babies. Picture Window Books.

Cita Chicago (17th ed.)

Dahl, Michael, i Sandra D'Antonio. Do Penguins Have Puppies?: A Book About Animal Babies. Mankato, MN: Picture Window Books, 2010.

Cita MLA (8th ed.)

Dahl, Michael, i Sandra D'Antonio. Do Penguins Have Puppies?: A Book About Animal Babies. Picture Window Books, 2010.