APA (7 ম সংস্করণ) উদ্ধৃতি

Willetts, P. (1996). The conscience of the world: The influence of non-governmental organisations in the UN system. Brookings Institution for the David Davies Memorial Institute of International Studies, London.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Willetts, Peter. The Conscience of the World: The Influence of Non-governmental Organisations in the UN System. Washington, DC: Brookings Institution for the David Davies Memorial Institute of International Studies, London, 1996.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Willetts, Peter. The Conscience of the World: The Influence of Non-governmental Organisations in the UN System. Brookings Institution for the David Davies Memorial Institute of International Studies, London, 1996.