Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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