edited by Sir Francis Vallat
Europa Publications, 1970
Buku Teks
Sagala, Shanty Sofiarli, author
Universitas Indonesia, 2008
UI - Skripsi (Open)
edited by James C. Hsiung
Paragon House, 1985
Buku Teks
Universitas Indonesia, 2008
UI - Skripsi (Open)
Forsythe, David P., 1941-, author
Angkasa, 1993
Buku Teks