The Balkan states exhibition :
1907, Earl's Court, London S.W., [London Exhibitions, Ltd.].

APA Citation

London Exhibitions, L., Earl's Court (London, E. (1907). The Balkan states exhibition: 1907, Earl's Court, London S.W., [London Exhibitions, Ltd.]. London: Gale & Polden.

MLA Citation

London Exhibitions, Ltd, and England) Earl's Court (London. The Balkan States Exhibition: 1907, Earl's Court, London S.W., [London Exhibitions, Ltd.]. London: Gale & Polden, 1907.

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