APA-ийн эшлэл(7 дахь хэвлэлт)

Barcelos, P., & De Angelis, G. (2013). The long quest for identity: Political identity and fundamental rights protection in the European Union. Peter Lang.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Barcelos, Paulo, ба Gabriele De Angelis. The Long Quest for Identity: Political Identity and Fundamental Rights Protection in the European Union. Bern ; New York: Peter Lang, 2013.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Barcelos, Paulo, ба Gabriele De Angelis. The Long Quest for Identity: Political Identity and Fundamental Rights Protection in the European Union. Peter Lang, 2013.