Gaya APA
MARTIN, A, D., SANDY, M.
(2010).
21 MOST POWEFUL SALES STORIES & CARTOONS
.
Jakarta:
HR Excellency.
Gaya MLA
MARTIN, ANTHONY, DIO., SANDY, MAX.
"21 MOST POWEFUL SALES STORIES & CARTOONS".
Jakarta:
HR Excellency,
2010.
Text.