Council for Research in Values and Philosophy, 2005
Buku Teks
Association of Academies of Sciences in Asia
Science Press, 2011
eBooks
Malcolm Maclachlan
John Wiley & sons Ltd, 2000
Buku Teks
MacLachlan, Malcolm
Open University Press, 2004
Buku Teks
Edited R. Harper; L. Palen
Springer, 2005
Buku Teks