Padoch, Christine
Martinus Nijhoff, 1982
Buku Teks
Artikel Jurnal
Gumilar Rusliwa Somantri
Lembaga Penelitian Universitas Indonesia, 1993
UI - Laporan Penelitian
Harvey, David, 1935-
Johns Hopkins University Press, 1973
Buku Teks
edited by Philip M. Hauser, Daniel B. Suits and Naohiro Ogawa
National Institute for Research Advancement, 1985
Buku Teks