Lenway, Stefanie Ann
The Politics of U.S. inyternational trade : protection expasnsion and escape / Stefanie Ann Lenway.
Pitman, 1985
 Buku Teks
Lipsey, Robert E.
Price and quantity trends in the foreign trade of the United States / by Robert E. Lipsey
Princeton University Press , 1963
 Buku Teks
Economic policy for development; selected readings
edited by I. Livingstone
Penguin Books, 1971
 Buku Teks
The politics of trade / League of Women Voters of the United States
League of Women Voters of the United States 1961, 1962
 Buku Teks
Changing patterns in foreign trade and payments
edited with an introd. by Bela Balassa
W.W. Norton, 1964
 Buku Teks