APA (7th ed.) Citation

Schreiner, P. (1991). Johannes XI. Bekkos, Patriarch von Konstantinopel (ca. 1230-1297).

Chicago Style (17th ed.) Citation

Schreiner, Peter. Johannes XI. Bekkos, Patriarch Von Konstantinopel (ca. 1230-1297). 1991.

MLA (9th ed.) Citation

Schreiner, Peter. Johannes XI. Bekkos, Patriarch Von Konstantinopel (ca. 1230-1297). 1991.

Warning: These citations may not always be 100% accurate.