APA استشهاد

Barker, T. M. (1972). Frederick the great and the making of Prussia. Holt Reinhart and Winston.

استشهاد بنمط شيكاغو

Barker, Thomas M. Frederick the Great and the Making of Prussia. New York: Holt Reinhart and Winston, 1972.

MLA استشهاد

Barker, Thomas M. Frederick the Great and the Making of Prussia. Holt Reinhart and Winston, 1972.