Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1990
UI - Skripsi (Membership)
Low, Janet, author
Upaya Swadaya Aksara, 1988
Buku Teks
Hutabarat, Adolf, author
Universitas Indonesia, 2000
UI - Tesis (Membership)
Iswi Hariyani, author
Visimedia, 2010
Buku Teks
Iswi Hariyani
Visimedia, 2010
Multimedia