The diplomacy of the Balkan wars, 1912-1913 /
by Ernst Christian Helmreich.

APA Citation

Helmreich, E. Christian. (1938). The diplomacy of the Balkan wars, 1912-1913. Cambridge: Harvard university press.

MLA Citation

Helmreich, Ernst Christian. The Diplomacy of the Balkan Wars, 1912-1913. Cambridge: Harvard university press, 1938.

Warning: These citations may not always be complete (especially for serials).