Gaya APA
Ginsburg, Herbert, Sylvia Opper. (1979).
Piaget's Theory of Intellectual Development (1).
New Jersey:
Prentice-Hall.
Gaya Chicago
Ginsburg, Herbert, Sylvia Opper.
Piaget's Theory of Intellectual Development.
1
New Jersey:
Prentice-Hall,
1979.
Text.
Gaya MLA
Ginsburg, Herbert, Sylvia Opper.
Piaget's Theory of Intellectual Development.
1
New Jersey:
Prentice-Hall,
1979.
Text.
Gaya Turabian
Ginsburg, Herbert, Sylvia Opper.
Piaget's Theory of Intellectual Development.
1
New Jersey:
Prentice-Hall,
1979.
Print.