Gaya APA
Costanzo,Margot. (1996).
Problem solving .
London:
Cavendish.
Gaya Chicago
Costanzo,Margot.
Problem solving.
London:
Cavendish,
1996.
Text.
Gaya MLA
Costanzo,Margot.
Problem solving.
London:
Cavendish,
1996.
Text.
Gaya Turabian
Costanzo,Margot.
Problem solving.
London:
Cavendish,
1996.
Print.