Gaya APA
Hummels, David. (1993).
Product Differentiation as a source of comparative advantage ? .
:
The American Economic Review.
Gaya Chicago
Hummels, David.
Product Differentiation as a source of comparative advantage ?.
:
The American Economic Review,
1993.
Text.
Gaya MLA
Hummels, David.
Product Differentiation as a source of comparative advantage ?.
:
The American Economic Review,
1993.
Text.
Gaya Turabian
Hummels, David.
Product Differentiation as a source of comparative advantage ?.
:
The American Economic Review,
1993.
Print.