Universitas Indonesia, 2013
UI - Skripsi (Membership)
Woll, John W.
Harcourt, Brace & World, 1966
Buku Teks
Artikel Jurnal
Universitas Indonesia, 2013
UI - Skripsi (Membership)
edited by S. Barry Cooper, Anuj Dawar, Benedikt Lowe
Springer-Verlag, 2012
eBooks