Schuman, Frederick L., author
McGraw-Hill, 1969
Buku Teks
International Monetary Fund, 1999
Buku Teks
Wu Tsai-kuang
World Anti-Communist League, 1987
Buku Teks
edited by Roy Harrod
Martin Press, 1965
Buku Teks
Rostow, Walt Whitman, author
A Clarion Book, 1969
Buku Teks