Ritter, G., & Paret, P. (1968). Frederick the Great: A historical profile. University of California Press.
芝加哥风格引文Ritter, Gerhard, 与 Peter Paret. Frederick the Great: A Historical Profile. Berkeley: University of California Press, 1968.
MLA引文Ritter, Gerhard, 与 Peter Paret. Frederick the Great: A Historical Profile. University of California Press, 1968.
警告：这些引文格式不一定是100％准确.