Gaya APA
Spence, G. (2002).
Seni berargumentasi dan menang setiap saat = how to argue and win every time .
Jakarta ::
Gramedia,.
Gaya MLA
Spence, Gerry.
"Seni berargumentasi dan menang setiap saat = how to argue and win every time".
Jakarta ::
Gramedia,,
2002.
Text.