Asean -Ec Energy Management Training and Research Centre, 1993,
Buku Referensi
Asean Secretary, 1991
Buku Teks
Asean Secretary, 1992
Buku Teks
Asean -Ec Energy Management Training and Research Centre, 1997,
Buku Referensi
Agus Cahyono Adi
Jakarta AEEMTRC 1996,
Buku Teks SO