APA Style
Atwater,Richard. ().
Mr. Popper's penguins .
:
.
Chicago Style
Atwater,Richard.
Mr. Popper's penguins.
:
,
.
Text.
MLA Style
Atwater,Richard.
Mr. Popper's penguins.
:
,
.
Text.
Turabian Style
Atwater,Richard.
Mr. Popper's penguins.
:
,
.
Print.