Hansen, Derek L.
Analyzing social media networks with NodeXL: insights from a connected world
Morgan Kaufmann, 2011
 Buku Teks
Macy, Beverly
The power of real-time social media marketing : how to attract and retain customers and grow the bottom line in the globally connected world
McGraw-Hill, 2011
 Buku Teks
Garland, John K.
Chemistry of our world
Macmillan, 1975
 Buku Teks
Gaunt, Jeremy
Our world now : Reuters
Thames & Hudson, 2010
 Buku Referensi
Our world's heritage
National Geographic Book Service.
National Geographic Society, 1987
 Buku Referensi