APA цитиране

Beard, C. A. 1., Beard, W., & Vagts, D. F. (1989). Charles A. Beard's the presidents in American history: George Washington to George Bush (Rev. ed.). Englewood Cliffs, NJ: J. Messner.

Чикагска система за цитиране

Beard, Charles A. 1874-1948., William Beard, и Detlev F. Vagts. Charles A. Beard's the Presidents in American History: George Washington to George Bush. Rev. ed. Englewood Cliffs, NJ: J. Messner, 1989.

MLA формат за цитиране

Beard, Charles A. 1874-1948., William Beard, и Detlev F. Vagts. Charles A. Beard's the Presidents in American History: George Washington to George Bush. Rev. ed. Englewood Cliffs, NJ: J. Messner, 1989.