Gaya APA
, ., Thomson, P. (1997).
Sell your way to the top, how you can sell more of everything menjual ìdengan gemilang .
Jkarta:
.
Gaya MLA
, ., Thomson, Peter.
"Sell your way to the top, how you can sell more of everything menjual ìdengan gemilang".
Jkarta:
,
1997.
Text.