Gaya APA
Berman, Saul Jay. (c2011).
Not for free: making money in the digital age .
mau:
Harvard Business Review Press.
Gaya Chicago
Berman, Saul Jay.
Not for free: making money in the digital age.
mau:
Harvard Business Review Press,
c2011.
Buku.
Gaya MLA
Berman, Saul Jay.
Not for free: making money in the digital age.
mau:
Harvard Business Review Press,
c2011.
Buku.
Gaya Turabian
Berman, Saul Jay.
Not for free: making money in the digital age.
mau:
Harvard Business Review Press,
c2011.
Buku.