Sells, Michael A. The Bridge Betrayed: Religion and Genocide in Bosnia. University of California Press. 1998. ISBN 0520216628. Ramet, Sabrina P. Serbia
Granquist, Mark A. "Estonian Americans." in Gale Encyclopedia of Multicultural America, edited by Thomas Riggs, (3rd ed., vol. 2, Gale, 2014), pp. 97-106. Online