edited by Kenneth B. Storey and Karen K. Tanino
CAB International, 2012
Buku Teks
Artikel Jurnal
Policy, alternatives for the Carribean and central America
Institute Studies, 1984
Buku Teks
edited Jeffrey Jowell and Dawn Oliver
Clarendon Press, 1989
Buku Teks
edited by Jeffrey Jowell and Dawn Oliver
Clarendon Press, 1994
Buku Teks