Ea Ostetgaard, editor
Parlgrave Macmillan, 2003
Buku Teks
United Nations Children's Fund , 1964
Buku Teks
editors, Jing Huang; Shreekant Gupta
World Scientific, 2014
Buku Teks
Princenton University Press , 1965
Buku Teks
Lancers Publishing, 1983
Buku Teks