Gaya APA
Ljungren, Roy G. (1989).
THE BUSINESS-TO-BUSINESS DIRECT MARKETING HANDBOOK .
New York:
Amacom.
Gaya Chicago
Ljungren, Roy G.
THE BUSINESS-TO-BUSINESS DIRECT MARKETING HANDBOOK.
New York:
Amacom,
1989.
Text.
Gaya MLA
Ljungren, Roy G.
THE BUSINESS-TO-BUSINESS DIRECT MARKETING HANDBOOK.
New York:
Amacom,
1989.
Text.
Gaya Turabian
Ljungren, Roy G.
THE BUSINESS-TO-BUSINESS DIRECT MARKETING HANDBOOK.
New York:
Amacom,
1989.
Print.