Pakpahan, Ratna Rosmauli, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Artikel Jurnal
London : Central Books Ltd
Majalah, Jurnal, Buletin
Marinus J.A. Werger, editor
[, Springer], 2012
eBooks
Friedman, Avner, author
Society for Industrial and Applied Mathematics, 1994
eBooks