Kuijper, P. J. (2008). Of "mixity" and "double-hatting": EU external relations law explained. University of Amsterdam.
芝加哥风格引文Kuijper, Pieter Jan. Of "Mixity" and "Double-hatting": EU External Relations Law Explained. Amsterdam: University of Amsterdam, 2008.
MLA引文Kuijper, Pieter Jan. Of "Mixity" and "Double-hatting": EU External Relations Law Explained. University of Amsterdam, 2008.
警告：这些引文格式不一定是100％准确.