APA استشهاد

Strongberg, R. N. (1992). Europe in the Twentieth Century (Ed.3.).

استشهاد بنمط شيكاغو

Strongberg, Ronald N. Europe in the Twentieth Century. Ed.3. New Jersey, Prentice Hall, 1992.

MLA استشهاد

Strongberg, Ronald N. Europe in the Twentieth Century. Ed.3. 1992.