Gaya APA
Sutojo, S., Kleinsteuber, F. (2007).
Effective Price Strategy to Increase Your Profit .
Jakarta:
Damar Mulia Pusta.
Gaya MLA
Sutojo, Siswanto., Kleinsteuber, F.
"Effective Price Strategy to Increase Your Profit".
Jakarta:
Damar Mulia Pusta,
2007.
Textbook.