Lee Chao, editor
Information Science Reference, 2012
Buku Teks SO
Artikel Jurnal
edited by Mary Ann Ponowitz Sagaria
Jossey-Bass, 1988
Buku Teks SO
Widia Rahayu Nita
Fakultas Teknik Universitas Indonesia, 2020
UI - Skripsi Membership
Dinter, Heinz
Macmillan, 1973
Buku Teks SO