Krugman, Paul R.
International economics : theory and policy
Pearson Education , 2014
 Buku Teks
Krugman, Paul R.
International economics : theory and policy
Pearson, 2009
 Buku Teks
Krugman, Paul R.
International economic : theory and policy
Addison-Wesley , 1997
 Buku Teks
Krugman, Paul R.
International economics : theory and policy
Harper Collins Publishers , 1991
 Buku Teks
Krugman, Paul R.
International economics : theory and policy
Scott, Foresman, 1988
 Buku Teks