APA-ийн эшлэл(7 дахь хэвлэлт)

Kuijper, P. J. (2008). Of "mixity" and "double-hatting": EU external relations law explained. University of Amsterdam.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kuijper, Pieter Jan. Of "Mixity" and "Double-hatting": EU External Relations Law Explained. Amsterdam: University of Amsterdam, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kuijper, Pieter Jan. Of "Mixity" and "Double-hatting": EU External Relations Law Explained. University of Amsterdam, 2008.