Welton, David A.
Mifflin Company, 1987
Buku Teks
Lee Chao, editor
Information Science Reference, 2012
Buku Teks
edited by Miroslaw Pawlak
Springer, 2012
eBooks
Ahmad Hani Mustafa, author
Universitas Indonesia, 2017
UI - Tesis (Membership)
Risanita Fardian Farid, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Tesis (Membership)