Vitale, J. (2005). The e-code: 33 internet superstars reveal 43 ways to make money online almost instantly--using only e-mail! J. Wiley.
استشهاد بنمط شيكاغوVitale, Joe. The E-code: 33 Internet Superstars Reveal 43 Ways to Make Money Online Almost Instantly--using Only E-mail! J. Wiley, 2005.
MLA استشهادVitale, Joe. The E-code: 33 Internet Superstars Reveal 43 Ways to Make Money Online Almost Instantly--using Only E-mail! J. Wiley, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.