APA

Knutsen Z. L., . (1997). A history of international relations theory. Mánchester (Inglaterra): Manchester University Press.

Chicago

Knutsen Zorbjorn L, . 1997. A history of international relations theory. Mánchester (Inglaterra): Manchester University Press.

Harvard

Knutsen Z. L., . (1997). A history of international relations theory. Mánchester (Inglaterra): Manchester University Press.

MLA

Knutsen Zorbjorn L, . A history of international relations theory. Mánchester (Inglaterra): Manchester University Press. 1997.