APA Style
Perle, Ruth Lerner. ().
Herbie's Happy Day .
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Chicago Style
Perle, Ruth Lerner.
Herbie's Happy Day.
:
,
.
Text.
MLA Style
Perle, Ruth Lerner.
Herbie's Happy Day.
:
,
.
Text.
Turabian Style
Perle, Ruth Lerner.
Herbie's Happy Day.
:
,
.
Print.