Παραπομπή APA

Sengupta, N. (2007). Economics of trade facilitation. Oxford University Press.

Παραπομπή Chicago Style

Sengupta, Nirmal. Economics of Trade Facilitation. New Delhi: Oxford University Press, 2007.

Παραπομπή MLA

Sengupta, Nirmal. Economics of Trade Facilitation. Oxford University Press, 2007.