Robinette, S. (2001). Emotion marketingthe hallmark way of winning customers for life. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Robinette, Scott. Emotion Marketingthe Hallmark Way of Winning Customers for Life. McGraw-Hill, 2001.
Lua MLA (8ú heag.)Robinette, Scott. Emotion Marketingthe Hallmark Way of Winning Customers for Life. McGraw-Hill, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.