Berman, S. J. 1. (2011). Not for free: Making money in the digital age. Boston, Mass: Harvard Business Review Press.
Chicago-stil citatBerman, Saul Jay 1946-. Not for Free: Making Money in the Digital Age. Boston, Mass: Harvard Business Review Press, 2011.
MLA-referensBerman, Saul Jay 1946-. Not for Free: Making Money in the Digital Age. Boston, Mass: Harvard Business Review Press, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.