O`Byrne, Peter
A to z of south east Asian orchid species
Orchid society of south east Asia, 2001
 Buku Teks SO
Insight Guide South Korea
APA Publications, 2011
 Buku Teks SO
Srinivasulu, Chelmala
South Asian mammals : their diversity, distribution, and status
Springer, 2012
 eBooks
South Asian studies in the balance : reflections from America
edited by Charles Hirschman, Charles F. Keyes, Karl Hutterer; with the assistance of G. Carter Bentley
Association for Asian Studies, 1992
 Buku Teks SO
South Asian overseas/ edited by Colin Clarke
Cambridge University Press, 1990
 Buku Teks