Cita APA

United Kingdom. Foreign Office. Historical Section & Prothero, G. (1920). Serbia. HMSO.

Citación estilo Chicago

United Kingdom. Foreign Office. Historical Section y G.W Prothero. Serbia. London: HMSO, 1920.

Cita MLA

United Kingdom. Foreign Office. Historical Section y G.W Prothero. Serbia. HMSO, 1920.