Gaya APA
Cohen, William A. (1995).
The Marketing plan (2e).
New York:
John Wiley.
Gaya Chicago
Cohen, William A.
The Marketing plan.
2e
New York:
John Wiley,
1995.
Buku.
Gaya MLA
Cohen, William A.
The Marketing plan.
2e
New York:
John Wiley,
1995.
Buku.
Gaya Turabian
Cohen, William A.
The Marketing plan.
2e
New York:
John Wiley,
1995.
Buku.