Citazione Stile APA (7a Edizione)

Baier, M. (1996). How to find and cultivate customers through direct marketing. NTC Business Books.

Citazione stile Chigago Style (17a edizione)

Baier, Martin. How to Find and Cultivate Customers Through Direct Marketing. Lincolnwood, IL: NTC Business Books, 1996.

Citatione MLA (9a ed.)

Baier, Martin. How to Find and Cultivate Customers Through Direct Marketing. NTC Business Books, 1996.