Gaya APA
Smith, Leslie. (1991).
Jean Piaget .
London:
ROUTLEDGE.
Gaya Chicago
Smith, Leslie.
Jean Piaget.
London:
ROUTLEDGE,
1991.
.
Gaya MLA
Smith, Leslie.
Jean Piaget.
London:
ROUTLEDGE,
1991.
.
Gaya Turabian
Smith, Leslie.
Jean Piaget.
London:
ROUTLEDGE,
1991.
.