APA-referens (7:e uppl.)
Usacheva, A. (2017). Knowledge, language and intellection from origen to Gregory Nazianzen: A selective survey. Peter Lang Edition.
Chicago-referens (17:e uppl.)
Usacheva, Anna. Knowledge, Language and Intellection from Origen to Gregory Nazianzen: A Selective Survey. Frankfurt am Main, [Germany]: Peter Lang Edition, 2017.
MLA-referens (9:e uppl.)
Usacheva, Anna. Knowledge, Language and Intellection from Origen to Gregory Nazianzen: A Selective Survey. Peter Lang Edition, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.