APA Style
Gretz, Susanna. (1991).
Frog in the middle .
New York:
Macmillan.
Chicago Style
Gretz, Susanna.
Frog in the middle.
New York:
Macmillan,
1991.
Text.
MLA Style
Gretz, Susanna.
Frog in the middle.
New York:
Macmillan,
1991.
Text.
Turabian Style
Gretz, Susanna.
Frog in the middle.
New York:
Macmillan,
1991.
Print.