Krugman, Paul R.
International economics : theory and policy
Harper Collins , 1994
 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
Krugman, Paul R.
International economics : theory and policy
Addison-Wesley, 2000
 Buku Teks
Krugman, Paul R.
International economics : theory and policy
Pearson Education , 2014
 Buku Teks