IAHA, 1979
Buku Teks
Broeze, Frank J.A., author
[Publisher not identified], 1974
Buku Teks
Lembaga Pemilihan Umum, 1978
Buku Teks
Asian Institute of Technology, 1977
Buku Teks
edited by M. Z. Cohn and G. Maier ; technical editor, D. E. Grierson
Pergamon Press, 1977
Buku Teks