Coba jelasin Bacaan lanjut dari Maharaja Yung Lo dalam bahasa melayu dong

Tsai, Shih-Shan Henry, Perpetual Happiness: The Ming Emperor Yongle, University of Washington Press, 2002. ISBN 0-295-98124-5. Partial text on Google Books.

Louise Levathes, When China Ruled the Seas: The Treasure Fleet of the Dragon Throne, 1405-1433, Oxford University Press, 1997, trade paperback, ISBN 0-19-511207-5