Imbriale, R. (2007). Motivational marketing: How to effectively motivate your prospects to buy now, buy more, and tell their friends too! John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Imbriale, Robert. Motivational Marketing: How to Effectively Motivate Your Prospects to Buy Now, Buy More, and Tell Their Friends Too! Hoboken, N.J.: John Wiley & Sons, 2007.
Lua MLA (8ú heag.)Imbriale, Robert. Motivational Marketing: How to Effectively Motivate Your Prospects to Buy Now, Buy More, and Tell Their Friends Too! John Wiley & Sons, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.