Gaya APA
Willingham, Ron. (1987).
Integrity Selling : how to succeed in selling in the competitive years ahead .
United states of america:
Doubleday.
Gaya Chicago
Willingham, Ron.
Integrity Selling : how to succeed in selling in the competitive years ahead.
United states of america:
Doubleday,
1987.
Buku Teks.
Gaya MLA
Willingham, Ron.
Integrity Selling : how to succeed in selling in the competitive years ahead.
United states of america:
Doubleday,
1987.
Buku Teks.
Gaya Turabian
Willingham, Ron.
Integrity Selling : how to succeed in selling in the competitive years ahead.
United states of america:
Doubleday,
1987.
Buku Teks.