Herskovits, Melville J. (Melville Jean), 1895-1963, author
Random House, 1972
Buku Teks
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, author
Open University Press, 2004
Buku Teks