Gaya APA
Ries, Al. (1989).
Bottom-up marketing .
New York:
McGraw Hill.
Gaya Chicago
Ries, Al.
Bottom-up marketing.
New York:
McGraw Hill,
1989.
Buku.
Gaya MLA
Ries, Al.
Bottom-up marketing.
New York:
McGraw Hill,
1989.
Buku.
Gaya Turabian
Ries, Al.
Bottom-up marketing.
New York:
McGraw Hill,
1989.
Buku.