APA

Bulat John, .Illustrated Postage Stamp History of Western Ukrainian Republic 1918-1919. New York: Philatelic Publications.

Chicago

Bulat John, .Illustrated Postage Stamp History of Western Ukrainian Republic 1918-1919. New York: Philatelic Publications.

Harvard

Bulat John, .Illustrated Postage Stamp History of Western Ukrainian Republic 1918-1919. New York: Philatelic Publications.

MLA

Bulat John, .New York: Philatelic Publications. .