Gaya APA
Boden, Margaret A.. (1980).
Jean Piaget .
Middlesex:
Penguin Books.
Gaya Chicago
Boden, Margaret A..
Jean Piaget.
Middlesex:
Penguin Books,
1980.
Text.
Gaya MLA
Boden, Margaret A..
Jean Piaget.
Middlesex:
Penguin Books,
1980.
Text.
Gaya Turabian
Boden, Margaret A..
Jean Piaget.
Middlesex:
Penguin Books,
1980.
Print.