Lumban Gaol, Denada Faraswacyen, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2005
UI - Tesis (Membership)
Fischer, Donald E., author
Prentice-Hall, 1987
Buku Teks
Cohen, Jerome B., author
Richard D. Irwin, 1987
Buku Teks
Fischer, Donald E., author
Prentice-Hall, 1991
Buku Teks
Natasha Angelica, author
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2020
UI - Tesis (Membership)