Arias, Jose J. Pazos
Recommender systems for the social web
Springer, 2012
 eBooks
Social tagging in a linked data environment
editor by, Diane Rasmussen Neal, Louise F. Spiter
Facet Publishing, 2019
 Buku Teks
Luhmann, Niklas
Social systems / Niklas Luhmann
Standford University Press, 1995
 Buku Teks
Hari Siswantoro
Kerangka privasi diferensial untuk sistem perekomendasi yang melindungi kerahasiaan pribadi = A differential privacy framework for privacy preserving recommender systems
Fakultas Teknik Universitas Indonesia, 2012
 UI - Tesis Membership
Loomis, Charles P.
Social systems: essays on their persistence and change
Van Nostrand Comp., 1967
 Buku Teks