Jaffe, J., & Albarda, M. (2014). Z.E.R.O.: Zero paid media as the new marketing model. John Wiley and Sons.

Jaffe, Joseph, and Maarten Albarda. Z.E.R.O.: Zero Paid Media as the New Marketing Model. Hoboken, New Jersey: John Wiley and Sons, 2014.

Jaffe, Joseph, and Maarten Albarda. Z.E.R.O.: Zero Paid Media as the New Marketing Model. John Wiley and Sons, 2014.