China before European Expansion
DUYVENDAK, J.L., China's Discovery of Africa, London: Probsthan, 1949.
DUYVENDAK, J.L., "The True Dates of the Chinese Maritime Expeditions in the Early XV Century ", T'oung Pao, 1938, vol 34, 341-412.
PELLIOT, Paul , "Les Grands Voyages Maritimes Chinois au Début du XV Siècle", T'oung Pao, 1933, vol. 33, 237-452.
YI-T'UNG, Wang , Official Relations Between China and Japan, 1368-1549, Cambridge (Mass.): Harvard University Press, 1953.
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