Kleon, Austin, author
Noura Books, 2015
Buku Teks
Mulyadi, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Fogler, H. Scott, author
Prentice-Hall, 2014
Buku Teks
Fogler, H. Scott, author
Prentice-Hall, 2008
Multimedia
Fogler, H. Scott, author
Prentice-Hall, 2008
Multimedia