Dugdale, B. E. (1920). Arthur James balfour. New York: G. P. Putnam's Sons.
Trích dẫn kiểu ChicagoDugdale, Blanche E. Arthur James Balfour. New York: G. P. Putnam's Sons, 1920.
Deismireacht MLADugdale, Blanche E. Arthur James Balfour. New York: G. P. Putnam's Sons, 1920.
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