Gaya APA
Schiffman, Stephan. (2013).
The Ultimate Book of Sales Techniques: 75 Ways to Master Cold Calling, Sharpen Your Unique Selling Proposition and Close the Sale .
Massachusetts:
Adam Media.
Gaya Chicago
Schiffman, Stephan.
The Ultimate Book of Sales Techniques: 75 Ways to Master Cold Calling, Sharpen Your Unique Selling Proposition and Close the Sale.
Massachusetts:
Adam Media,
2013.
Buku Tercetak.
Gaya MLA
Schiffman, Stephan.
The Ultimate Book of Sales Techniques: 75 Ways to Master Cold Calling, Sharpen Your Unique Selling Proposition and Close the Sale.
Massachusetts:
Adam Media,
2013.
Buku Tercetak.
Gaya Turabian
Schiffman, Stephan.
The Ultimate Book of Sales Techniques: 75 Ways to Master Cold Calling, Sharpen Your Unique Selling Proposition and Close the Sale.
Massachusetts:
Adam Media,
2013.
Buku Tercetak.