APA استشهاد

Neumann, R. G. (1960). European and comparative government./3e (3d ed.). McGraw-Hil book company.

استشهاد بنمط شيكاغو

Neumann, Robert G. European and Comparative Government./3e. 3d ed. New York: McGraw-Hil book company, 1960.

MLA استشهاد

Neumann, Robert G. European and Comparative Government./3e. 3d ed. McGraw-Hil book company, 1960.