Gaya APA

Nye, J, S., Welch, D, A. (2014). Understanding Global Conflict & Cooperation : intro to theory & history, 9th Ed. (9th. Ed). England: Pearson.

Gaya MLA

Nye, Joseph, S., Welch, David, A. "Understanding Global Conflict & Cooperation : intro to theory & history, 9th Ed.". 9th. Ed England: Pearson, 2014. Text.