APA

Welch D. A., . (2005). Painful choices a theory of foreign policy change. Princeton (Nueva Jersey, Estados Unidos): Princeton University Press.

Chicago

Welch David A, . 2005. Painful choices a theory of foreign policy change. Princeton (Nueva Jersey, Estados Unidos): Princeton University Press.

Harvard

Welch D. A., . (2005). Painful choices a theory of foreign policy change. Princeton (Nueva Jersey, Estados Unidos): Princeton University Press.

MLA

Welch David A, . Painful choices a theory of foreign policy change. Princeton (Nueva Jersey, Estados Unidos): Princeton University Press. 2005.