Ukena-Best, E. (2008). Birck,Byrck, Birk, Birken, Sixt, Latinisiert: Xystus Betuleius, Betulius.
Chicago Style (17th ed.) CitationUkena-Best, Elke. Birck,Byrck, Birk, Birken, Sixt, Latinisiert: Xystus Betuleius, Betulius. 2008.
MLA (9th ed.) CitationUkena-Best, Elke. Birck,Byrck, Birk, Birken, Sixt, Latinisiert: Xystus Betuleius, Betulius. 2008.
Warning: These citations may not always be 100% accurate.