
United Kingdom. Foreign Office. Historical Section & Prothero, G. (1920). The Don and the Volga basins. HMSO.
Chicago ZitierstilUnited Kingdom. Foreign Office. Historical Section und G.W Prothero. The Don and the Volga Basins. London: HMSO, 1920.
MLA ZitierstilUnited Kingdom. Foreign Office. Historical Section und G.W Prothero. The Don and the Volga Basins. HMSO, 1920.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.