Abruzzi, Adam
Work measurement, new principles and procedures / Adam Abruzzi
Columbia University Press, 1953
 Buku Teks
The Rights to a healthy environmental : international law perspective
 Artikel Jurnal
Mas Achmad Santosa
The right to healthy environment: international law perspective
2005
 Artikel Jurnal
Public sector reform : an international perspective
Brendan C. Nolan, editor
Palgrave Macmillan, 2001
 Buku Teks
Walker, Eric
ABC of healthy travel / Eric Walker, Glyn Williams and Fiona Raeside
BMJ , 1993
 Buku Teks