APA استشهاد

Legg, K. R., & Morrison, J. F. (1971). Politics and the International system, an Introduction. Harper& Ros.

استشهاد بنمط شيكاغو

Legg, Keith R., و James F. Morrison. Politics and the International System, an Introduction. New York: Harper& Ros, 1971.

MLA استشهاد

Legg, Keith R., و James F. Morrison. Politics and the International System, an Introduction. Harper& Ros, 1971.