Gaya APA
Ley, D. Forbes. (1989).
The best seller .
California:
Sales Success.
Gaya Chicago
Ley, D. Forbes.
The best seller.
California:
Sales Success,
1989.
Text.
Gaya MLA
Ley, D. Forbes.
The best seller.
California:
Sales Success,
1989.
Text.
Gaya Turabian
Ley, D. Forbes.
The best seller.
California:
Sales Success,
1989.
Print.