edited by Peter Roberts and Hugh Sykes
Sage, 2003
Buku Referensi
edited by Peter Roberts, Hugh Sykes
Sage Publications, 2003
Buku Referensi
Janice Jacob Kayan Jap, author
Sekolah Ilmu Lingkungan Universitas Indonesia, 2020
UI - Tesis (Membership)
Newnes-Butterworths, 1979
Buku Teks
Powell, Kennetth
te Neues, 2000
Buku Teks