Gates, Bill, author
Warner Books, 1999
Buku Teks
Ellsworth, Jill H., author
Wiley, 1994
Buku Teks
Muhammad Iqbal, author
2013
UI - Skripsi (Membership)
Candra Ahmadi, author
Andi, 2013
Buku Teks
Zarella, Dan, author
The social media marketing book : sukses berbisnis lewat facebook, twitter, you tube, myspace, flickr, digg, reddit, yelp, second life, stumbleUpon, Linkedln, blog, dan media-media sosial lainnya
Serambi Ilmu Semesta, 2011
Buku Teks