Fakultas Kedokteran Universitas Indonesia, 1991
Buku Referensi
Dharma Bhakti, 1990
Buku Teks
Indonesia. Directorate General of Tourism
Wahyu Promospirit, 1990
Buku Referensi
Library of Congress; edited by James W. Mc. Chung
Library of Congress, 1991
Buku Teks
edited, Peter Catterall
Institute of Contemporary British History, 1990
Buku Teks