Wastewater treatment : evaluation and implementation : proceedings of Water Environment '94, a joint Institution of Civil Engineers and Institution of Water and Environment [i.e. Environmental] Management conference, held in London on 9-10 March 1994 / [edited by B.H. Rofe].
T. Telford, 1994.
 Buku Teks
Seminar internasional sastra, film, dan pendidikan, 19-20 November 1993
Fakultas Sastra. Universitas Indonesia, 1993
 Koleksi Publik
Seminar internasional sastra, film, dan pendidikan, 19-20 November 1993
Fakultas Sastra. Universitas Indonesia, 1993
 Buku Teks SO
Subregional seminar on teacher training in environmental education for Asia, 15-22 November 1987
UPM- UNESCO-UNEP International Environmental Education Programme , 1987
 Buku Teks
Kongres Bahasa Indonesia VI : Jakarta 28 Oktober-2 November 1993
Departemen Pendidikan dan Kebudayaan
Departemen Pendidikan dan Kebudayaan, 1993
 Buku Referensi