APA

Krugman P. R., . (1995). Development, geography, and economic theory. Cambridge (Inglaterra): MIT Press.

Chicago

Krugman Paul Robin, . 1995. Development, geography, and economic theory. Cambridge (Inglaterra): MIT Press.

Harvard

Krugman P. R., . (1995). Development, geography, and economic theory. Cambridge (Inglaterra): MIT Press.

MLA

Krugman Paul Robin, . Development, geography, and economic theory. Cambridge (Inglaterra): MIT Press. 1995.