Mason, Edward S., author
Fordham University Press, 1958
Buku Teks
Myint, Hla, author
Oxford University Press, 1971
Buku Teks
Staley, Eugene, author
Published for the Council on Foreign Relations by Harper, 1961
Buku Teks
Eliasson, Gunnar
Swedish Industrial Publications , 1976
Buku Teks
George Allen and Unwin, 1963
Buku Teks