Silier, Y., & Silier, Y. (2005). Freedom: Political, metaphysical, negative, and positive. Ashgate.
芝加哥风格引文Silier, Yildiz, 与 Yıldız Silier. Freedom: Political, Metaphysical, Negative, and Positive. Aldershot [u.a.]: Ashgate, 2005.
MLA引文Silier, Yildiz, 与 Yıldız Silier. Freedom: Political, Metaphysical, Negative, and Positive. Ashgate, 2005.
警告：这些引文格式不一定是100％准确.