APA استشهاد

Eichelberger, C. M. (1970). UN: The first twenty -five years. Harper & Row.

استشهاد بنمط شيكاغو

Eichelberger, Clark M. UN: The First Twenty -five Years. New York: Harper & Row, 1970.

MLA استشهاد

Eichelberger, Clark M. UN: The First Twenty -five Years. Harper & Row, 1970.