Twayne Publishers. A division of G. K. Hall & Co., Boston., 1978, ISBN 0-8057-8413-6, p. 212: The smallest of the South Slavic ethnic groups in America are...
Twayne Publishers. A division of G. K. Hall & Co., Boston., 1978, ISBN 0-8057-8413-6, p. 212. Harvard encyclopedia of American ethnic groups, Stephan Thernstrom...
218 Twayne Publishers. A division of G. K. Hall & Co., Boston. ISBN 0805784136. Who's Who. 1919. Spence, Richard (June 1, 2012). "The Tsar's other lieutenant:...