Παραπομπή APA

Gylfason,Thorvaldur. (1999). Principles of economic growth. Oxford University Press.

Παραπομπή Chicago Style

Gylfason,Thorvaldur. Principles of Economic Growth. New York: Oxford University Press, 1999.

Παραπομπή MLA

Gylfason,Thorvaldur. Principles of Economic Growth. Oxford University Press, 1999.