Sleeswyk 1996, hlm. 11-12. Sleeswyk, André Wegener (1996), "The Liao and the Displacement of Ships in the Ming Navy", Mariner's Mirror, 82 (1): 3–13, doi:10.1080/00253359.1996.10656579
Dreyer 2007, hlm. 104. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164
Dreyer 2007, hlm. 102. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164
Dreyer 2007, hlm. 111. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164
Dreyer 2007, hlm. 103-104. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164
Dreyer 2007, hlm. 152-153. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164
Dreyer 2007, hlm. 162. Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, ISBN978-0-321-08443-9, OCLC64592164